{"title":"AS Aquaristik","description":"\u003cp\u003eAS Aquaristik products at Aquarium Boutique – aquarium care and accessories made in Germany.\u003c\/p\u003e","products":[{"product_id":"as-aquaristik-airstone-vario-l-1000mm","title":"Airstone Vario L (1000 mm)","description":"\u003cdiv class=\"ai-seo-content\"\u003e\n\n\u003ch2\u003eAirstone Vario L 1000 mm – Full-Length Fine Bubble Air Stone for Large Aquariums and Ponds\u003c\/h2\u003e\n\n\u003cp\u003eThe Airstone Vario L (1000 mm \/ 1 meter) is the largest format in the Vario airstone series, designed for full-width oxygenation of large aquariums, display tanks, fish rooms, koi ponds, and commercial aquatic installations. At 1 full meter in length, it creates an impressive, uniform curtain of fine bubbles along the entire width of a large tank — delivering powerful, efficient aeration where it's needed most.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eLike the S and M variants, the Vario L uses premium sintered mineral material to produce consistently fine, uniform bubbles. The 1-meter format is particularly effective in aquariums of 200 L and above, as well as garden ponds and koi ponds where dissolved oxygen levels need to be maintained at stable, high levels — especially during summer when water temperature rises and oxygen solubility decreases.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1000 mm \/ 1-meter length — full-width coverage for large tanks and ponds\u003c\/li\u003e\n  \u003cli\u003eFine, uniform bubble production — maximum oxygen transfer\u003c\/li\u003e\n  \u003cli\u003eDurable sintered mineral body — washable and long-lasting\u003c\/li\u003e\n  \u003cli\u003eModular connection — combine with other Vario units for any length\u003c\/li\u003e\n  \u003cli\u003eStandard 4 mm airline connection (adapter for larger airline tubing may be needed for high-flow applications)\u003c\/li\u003e\n  \u003cli\u003eFreshwater and saltwater compatible\u003c\/li\u003e\n  \u003cli\u003eDramatic visual bubble wall effect for display aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLength: 1000 mm (1 meter)\u003c\/li\u003e\n  \u003cli\u003eType: cylindrical sintered air stone\u003c\/li\u003e\n  \u003cli\u003eAirline connection: 4 mm (standard)\u003c\/li\u003e\n  \u003cli\u003eBubble size: fine\u003c\/li\u003e\n  \u003cli\u003eMaterial: sintered mineral\u003c\/li\u003e\n  \u003cli\u003eModular series connection (end cap removable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAquarium Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLarge display aquariums (200 L and above)\u003c\/li\u003e\n  \u003cli\u003ePublic aquarium installations\u003c\/li\u003e\n  \u003cli\u003eFish room and hatchery oxygenation\u003c\/li\u003e\n  \u003cli\u003eKoi ponds and ornamental garden ponds\u003c\/li\u003e\n  \u003cli\u003eAquaponics systems\u003c\/li\u003e\n  \u003cli\u003eSaltwater fish rooms and marine systems\u003c\/li\u003e\n  \u003cli\u003eDramatic full-width bubble wall display\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-capacity aquarium air pumps (dual-outlet or multi-outlet recommended for 1m length)\u003c\/li\u003e\n  \u003cli\u003e4 mm airline tubing (standard)\u003c\/li\u003e\n  \u003cli\u003eSeries-connectable with Airstone Vario S and M units\u003c\/li\u003e\n  \u003cli\u003eFreshwater and marine environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a more powerful air pump for the 1-meter stone?\u003c\/strong\u003e Yes. A 1-meter airstone has significantly more resistance than shorter units. Use a high-capacity air pump rated for 1000+ L\/h output, or connect a dual-outlet pump with separate feeds at each end of the stone for even bubble distribution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I cut the stone to a shorter length?\u003c\/strong\u003e Manufacturer has not officially published guidance on this. Exercise caution — sintered material may crumble at cut points.\u003c\/p\u003e\n\n\u003ch3\u003eExpert Recommendations\u003c\/h3\u003e\n\u003cp\u003eFor large airstones, consider connecting the airline at multiple points along the stone (or using a high-capacity pump) to ensure even bubble distribution from end to end. Low-power pumps connected only at one end will produce uneven bubble output, with strong bubbling near the connection and minimal output at the far end.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AS Aquaristik","offers":[{"title":"Default Title","offer_id":61633293680970,"sku":"74p03281","price":24.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/14_b35f3269-23f8-4b06-ba69-b8c52f8cd9a4.jpg?v=1780178690"},{"product_id":"as-aquaristik-airstone-vario-m-250mm","title":"Airstone Vario M (250 mm)","description":"\u003cdiv class=\"ai-seo-content\"\u003e\n\n\u003ch2\u003eAirstone Vario M 250 mm – Fine Bubble Air Stone for Medium Aquarium Oxygenation\u003c\/h2\u003e\n\n\u003cp\u003eThe Airstone Vario M (250 mm) is a medium-length cylindrical air stone designed to deliver efficient, fine-bubble aeration across a wider section of the aquarium floor. At 250 mm (25 cm), it creates a longer bubble curtain compared to the compact S version, making it ideal for medium-sized tanks where broader water column coverage is beneficial for fish health, water circulation, and visual effect.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Vario M uses the same high-quality sintered mineral material as the Vario S, producing consistently fine, uniform bubbles that rise slowly through the water column for maximum oxygen dissolution. Its modular design allows end-to-end connection with other Vario airstones, enabling the creation of extended bubble walls of any length.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e250 mm length — ideal coverage for medium tanks (60–150 L range)\u003c\/li\u003e\n  \u003cli\u003eFine, uniform bubble production — maximum oxygen transfer per liter of air\u003c\/li\u003e\n  \u003cli\u003eDurable sintered mineral body — long service life, washable\u003c\/li\u003e\n  \u003cli\u003eModular connection — chain multiple units for extended bubble walls\u003c\/li\u003e\n  \u003cli\u003eStandard 4 mm airline connection\u003c\/li\u003e\n  \u003cli\u003eCreates even water circulation across a broader tank width\u003c\/li\u003e\n  \u003cli\u003eSuitable for freshwater and saltwater aquariums\u003c\/li\u003e\n  \u003cli\u003eDecorative visual effect — natural-looking bubble curtain\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLength: 250 mm\u003c\/li\u003e\n  \u003cli\u003eType: cylindrical sintered air stone\u003c\/li\u003e\n  \u003cli\u003eAirline connection: 4 mm (standard)\u003c\/li\u003e\n  \u003cli\u003eBubble size: fine\u003c\/li\u003e\n  \u003cli\u003eMaterial: sintered mineral (ceramic-type porous stone)\u003c\/li\u003e\n  \u003cli\u003eModular end connection (end cap removable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAquarium Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOxygenation for medium fish-only tanks (60–150 L)\u003c\/li\u003e\n  \u003cli\u003eBack-wall bubble curtain in display aquariums\u003c\/li\u003e\n  \u003cli\u003eNighttime aeration for planted tanks (60–120 L)\u003c\/li\u003e\n  \u003cli\u003eBreeding and fry tanks requiring gentle, broad aeration\u003c\/li\u003e\n  \u003cli\u003eMarine tanks benefiting from fine-bubble surface agitation\u003c\/li\u003e\n  \u003cli\u003eKoi and ornamental pond supplementary aeration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAll standard aquarium air pumps\u003c\/li\u003e\n  \u003cli\u003e4 mm inner diameter airline tubing\u003c\/li\u003e\n  \u003cli\u003eFreshwater and marine aquariums\u003c\/li\u003e\n  \u003cli\u003eSeries-connectable with Airstone Vario S and L units\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Recommendations\u003c\/h3\u003e\n\u003cp\u003eFor optimal oxygenation, position the Vario M along the rear wall of the aquarium, partially buried in substrate. Use with an adjustable flow valve to fine-tune bubble density. In planted tanks, connect to a timer to activate only during the night period.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AS Aquaristik","offers":[{"title":"Default Title","offer_id":61633293746506,"sku":"74p03278","price":7.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/14_e34b9977-b8ca-4017-a4a3-fc3c93e12c35.jpg?v=1780177440"},{"product_id":"as-aquaristik-airstone-vario-s-125mm","title":"Airstone Vario S (125 mm)","description":"\u003ch2\u003eAirstone Vario S (125 mm) – Fine-Bubble Air Stone for Nano and Small Aquariums\u003c\/h2\u003e\n\n\u003cp\u003eThe Airstone Vario S is a compact 125 mm cylindrical air stone built to bring a steady curtain of fine oxygen bubbles into nano tanks, small freshwater setups, and targeted aeration zones inside larger aquariums. Made from a sintered mineral (ceramic-type porous) material, it diffuses compressed air from a standard aquarium pump into a dense stream of small, even bubbles that rise slowly through the water column. That slow rise is what makes an air stone useful: it maximizes the surface contact time between air and water, which is where the actual gas exchange happens, and it stirs the water gently enough to prevent temperature and oxygen stratification without disturbing fish or shrimp.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Makes It Different\u003c\/h3\u003e\n\u003cp\u003eWhere a lot of budget air stones produce uneven, chunky bubbles that lose their aeration efficiency within weeks, the Vario S is built around consistent pore structure in the sintered material, so bubble output stays fine and uniform for longer with basic maintenance. Its modular design is also worth noting: the black end cap can be removed, letting you connect multiple Vario stones in series to build a longer bubble curtain or aerate more than one small tank from a single air line, without buying a separate multi-outlet manifold.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFine, uniform bubble output for efficient oxygen transfer at the water surface\u003c\/li\u003e\n  \u003cli\u003e125 mm length — sized for nano tanks and small aquariums, or precise aeration spots in bigger ones\u003c\/li\u003e\n  \u003cli\u003eDurable sintered mineral construction that holds fine bubble output with regular cleaning\u003c\/li\u003e\n  \u003cli\u003eFits standard 4 mm airline tubing — no adapters needed on most setups\u003c\/li\u003e\n  \u003cli\u003eRemovable end cap for connecting multiple stones in series\u003c\/li\u003e\n  \u003cli\u003eGentle water movement that helps prevent stagnant zones and temperature stratification\u003c\/li\u003e\n  \u003cli\u003eWorks in both freshwater and marine aquariums\u003c\/li\u003e\n  \u003cli\u003eDoubles as a decorative bubble feature in display tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 125 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e sintered mineral (ceramic-type porous stone)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBubble size:\u003c\/strong\u003e fine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAirline connection:\u003c\/strong\u003e standard 4 mm tubing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd cap:\u003c\/strong\u003e removable, for series connection with additional Vario units\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater type:\u003c\/strong\u003e freshwater and marine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir pressure rating \/ maximum flow rate:\u003c\/strong\u003e Manufacturer has not officially published this specification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Should Use This\u003c\/h3\u003e\n\u003cp\u003eThe Vario S is a natural fit for nano and small aquarium keepers who need reliable aeration without a bulky stone dominating the tank. It's equally useful for hospital and quarantine tanks, where gentle, well-oxygenated water matters more than flow rate, and for breeding or fry-rearing setups where strong currents aren't welcome. Shrimp keepers often reach for a stone this size specifically because it gives surface agitation without the turbulence larger air stones or powerheads create. It's also a sensible add-on for planted tank owners running CO2 injection who want supplemental oxygenation overnight, when plants stop producing oxygen and start consuming it.\u003c\/p\u003e\n\n\u003ch3\u003eHow to Use It\u003c\/h3\u003e\n\u003cp\u003eConnect the Vario S to a 4 mm airline running from your air pump, weighting or securing it near the substrate so it stays submerged and stable. Use an inline valve if you want to fine-tune bubble rate rather than running the pump at full output. If you're chaining multiple stones, remove the end cap and connect the next unit's inlet directly, keeping the total length within what your pump can comfortably drive — an underpowered pump across too many stones will show up as weak, inconsistent bubbling at the far end of the chain.\u003c\/p\u003e\n\n\u003ch3\u003eExpert Tip\u003c\/h3\u003e\n\u003cp\u003eIn a planted, CO2-injected tank, don't run the air stone during the light period — the extra surface agitation speeds up CO2 off-gassing and works against your injection rate. Instead, put the air pump on a timer set to switch on when your lights (and CO2) switch off. You get the oxygenation benefit overnight, when your plants need it most, without losing a drop of CO2 during the day.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWill this air stone disturb a CO2-injected planted tank?\u003c\/strong\u003e Running continuously, yes — it accelerates CO2 loss. Running only at night on a timer, it's a good practice that most planted tank keepers use without issue.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I clean it?\u003c\/strong\u003e Soak it in a 3% hydrogen peroxide solution for about 30 minutes, then rinse thoroughly before reuse. Do this whenever you notice bubble output getting coarser or weaker, typically every few weeks depending on your water.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I connect several Vario stones to one air pump?\u003c\/strong\u003e Yes — remove the end cap on each stone to link them in series. Just make sure your pump has enough output for the combined length; check the pump's specified maximum tubing length or number of outlets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe for shrimp and fry?\u003c\/strong\u003e Yes. The fine bubble output and gentle circulation make it one of the safer aeration options for sensitive livestock, unlike stronger air stones or powerheads that can create currents shrimp and fry struggle against.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it work in a saltwater tank?\u003c\/strong\u003e Yes, it's rated for both freshwater and marine use.\u003c\/p\u003e\n\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAirstone Vario M (250 mm)\u003c\/strong\u003e — for a longer bubble curtain or aerating a larger connected tank in the same series chain\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAirstone Vario L (1000 mm)\u003c\/strong\u003e — for large aquariums or ponds needing full-width aeration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir Tube 4\/6 mm – 3 m Aquarium Airline Hose\u003c\/strong\u003e — matching 4 mm airline tubing to connect the stone to your air pump\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"AS Aquaristik","offers":[{"title":"Default Title","offer_id":61633293779274,"sku":"74p03275","price":4.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/14_377fc410-2734-4b2c-b19b-45ac7514443f.jpg?v=1780177123"},{"product_id":"co2-schlauch-pro-4-6mm-2m","title":"CO2 Schlauch PRO 4\/6 mm (2 m)","description":"\u003ch2\u003eCO2 Schlauch PRO 4\/6 mm (2 m) — Gas-Tight Tubing for Pressurized CO2 Systems\u003c\/h2\u003e\n\n\u003cp\u003eIf you've invested in a pressurized CO2 setup, the tubing connecting it all together matters more than most hobbyists realize. The CO2 Schlauch PRO 4\/6 mm is a purpose-built silicone hose that carries CO2 from your regulator to your diffuser without the slow, invisible gas loss that standard airline tubing allows. At 2 meters long with the industry-standard 4 mm inner \/ 6 mm outer diameter, it's built to be the reliable \"last mile\" of any planted tank CO2 system.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Makes It Different\u003c\/h3\u003e\n\u003cp\u003eOrdinary silicone or vinyl airline tubing — the kind sold for air pumps — is not designed to hold CO2. Over weeks and months, CO2 molecules slowly permeate through the walls of standard tubing, which means your bubble counter can be lying to you: you're injecting X bubbles per second, but less CO2 is actually reaching your plants than you think. This tubing uses a food-safe silicone formulated to resist that gas permeation, so the CO2 you dose is the CO2 your plants actually get. It also stays flexible in cold conditions rather than stiffening up like PVC-based hoses often do, which makes routing it around tight cabinet corners far less frustrating.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCO2-resistant silicone construction minimizes gas permeation loss compared to standard airline tubing\u003c\/li\u003e\n  \u003cli\u003eStays soft and flexible even in cool cabinet environments — no cracking or stiffening over time\u003c\/li\u003e\n  \u003cli\u003eSmooth, coated surface resists dust and grime buildup, keeping the line looking clean\u003c\/li\u003e\n  \u003cli\u003eUniversal 4\/6 mm sizing fits virtually every regulator, solenoid, bubble counter, check valve, and diffuser on the market\u003c\/li\u003e\n  \u003cli\u003e2-meter length is enough for most under-cabinet CO2 setups with room to route around obstacles\u003c\/li\u003e\n  \u003cli\u003eFood-safe material — no leaching of harmful substances into aquarium water\u003c\/li\u003e\n  \u003cli\u003eSoftens slightly in hot water for an easier, tighter push-fit onto glass fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eInner diameter: 4 mm\u003c\/li\u003e\n  \u003cli\u003eOuter diameter: 6 mm\u003c\/li\u003e\n  \u003cli\u003eLength: 2 meters\u003c\/li\u003e\n  \u003cli\u003eMaterial: food-safe, CO2-resistant silicone\u003c\/li\u003e\n  \u003cli\u003eMaximum working pressure: Manufacturer has not officially published this specification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Should Use This\u003c\/h3\u003e\n\u003cp\u003eThis tubing is for anyone running a pressurized CO2 system on a planted or aquascaped tank — from a first-time high-tech setup to an experienced aquascaper maintaining several tanks. It's also the right call if you're replacing an aging hose: silicone tubing does degrade over time, and yellowing, stiffness, or visible cracking are signs it's due for a swap. If you're only running DIY or yeast-based CO2 at very low pressure, standard airline tubing may be sufficient, but for any regulator-driven system, CO2-resistant tubing like this is worth the small extra cost.\u003c\/p\u003e\n\n\u003ch3\u003eHow to Install It\u003c\/h3\u003e\n\u003cp\u003eCut the tubing to the length you need with a clean, straight cut — a sharp blade prevents crimping at the cut edge. Push it firmly onto your regulator or solenoid outlet, then run it to your bubble counter, check valve, and finally your diffuser. For glass diffusers or glass lily pipes, dip the last centimeter of tubing in hot (not boiling) water for a few seconds to soften it; this lets it slide onto the glass fitting easily and then grip tightly as it cools, forming a gas-tight seal without needing a hose clamp in most cases.\u003c\/p\u003e\n\n\u003ch3\u003eExpert Tip\u003c\/h3\u003e\n\u003cp\u003eA hose that looks fine on the outside can still be leaking CO2 through its walls if it's the wrong material — this is one of the most common, hardest-to-diagnose reasons a planted tank's CO2 levels seem to drift even though the bubble count hasn't changed. If your drop checker is running greener than expected despite a consistent bubble rate, checking your tubing is one of the first things worth ruling out, right alongside checking for loose fittings. As a general rule, plan to replace CO2 tubing every 2–3 years, or sooner if you notice yellowing or stiffening.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use regular airline tubing instead of CO2-specific tubing?\u003c\/strong\u003e\u003cbr\u003e\nYou can, but you'll likely lose more CO2 through the tubing walls over time, which makes dosing less predictable and wastes gas. For a pressurized system it's not worth the small savings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this tubing safe for a shrimp or fish tank?\u003c\/strong\u003e\u003cbr\u003e\nYes — the silicone used is food-safe and won't leach anything harmful into your water.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I get a tight seal on glass fittings?\u003c\/strong\u003e\u003cbr\u003e\nSoften the end of the tubing briefly in hot water before pushing it onto the glass connector. It will shrink slightly and grip firmly as it cools.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill 2 meters be enough for my tank?\u003c\/strong\u003e\u003cbr\u003e\nFor most under-cabinet setups where the CO2 cylinder sits next to or below the aquarium, 2 meters covers the full run from regulator to diffuser with some to spare for routing. For larger tanks or cylinders placed further away, you may want to plan the route in advance or combine two lengths.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes this tubing work with my existing regulator and diffuser, even if they're a different brand?\u003c\/strong\u003e\u003cbr\u003e\nAlmost certainly yes — 4\/6 mm is the de facto standard size across the CO2 equipment market, so this tubing fits the vast majority of regulators, solenoids, bubble counters, and diffusers regardless of brand.\u003c\/p\u003e\n\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChihiros Nano CO₂ Diffuser (M)\u003c\/strong\u003e — a compact glass diffuser that connects directly to this tubing for efficient CO2 dissolution in planted tanks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChihiros CO2 Regulator Mate\u003c\/strong\u003e — an all-in-one regulator with integrated solenoid, the ideal starting point of the CO2 line this tubing completes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChihiros CO2 Pressure Regulator PRO Limited Edition\u003c\/strong\u003e — a precision dual-stage regulator for hobbyists who want tighter pressure control on a high-tech setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"AS Aquaristik","offers":[{"title":"Default Title","offer_id":61633298530634,"sku":"11c50051","price":6.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/www.aquarium-boutique.comt_18.jpg?v=1780171421"}],"url":"https:\/\/aquarium-boutique.com\/collections\/as-aquaristik.oembed","provider":"Aquarium Boutique","version":"1.0","type":"link"}