Me CO2 Regulator Basic – CO2 Pressure Regulator with Two Gauges and Fine-Adjustment Valve
Trusted by 500+ aquascapers
- Entry-level regulator for planted tanks
- Two gauges: bottle and working pressure
- Fine-adjustment valve for the bubble rate
- Fits W21.8 refillable bottles
- Compact metal body, 220 g
Me CO2 Regulator Basic – CO2 Pressure Regulator with Two Gauges and Fine-Adjustment Valve is backordered and will ship as soon as it is back in stock.
Fast delivery (1–5 days EU)
Carefully packed and protected
Tips from real aquascapers
Me CO2 Regulator Basic – CO2 Pressure Regulator with Two Gauges and Fine-Adjustment Valve is backordered and will ship as soon as it is back in stock.
Description
Description
The Me CO2 Regulator Basic is a single-chamber CO2 pressure regulator for refillable bottles with a W21.8 connection. It has two gauges for bottle and working pressure, a fine-adjustment valve and a robust metal housing.
For a first pressurised CO2 system you don't need a solenoid or smart features, just a reliable way to feed a steady amount of CO2 to your plants. The Basic does exactly that. If you want CO2 to switch off at night on a timer, choose the Me CO2 Regulator Ultra with built-in solenoid valve.
Key specifications
| Type | Single-chamber pressure regulator |
| Connection | W21.8 (refillable CO2 bottles) |
| Working pressure | Adjustable up to 3 bar (preset approx. 1 bar) |
| Gauges | 2 (bottle pressure and working pressure) |
| Flow control | Fine-adjustment valve |
| Housing | Metal |
| Dimensions | 7.8 × 6.8 × 4.3 cm |
| Weight | 0.22 kg |
What's in the box?
- CO2 pressure regulator with two gauges
- Instruction manual
What else do I need?
- A refillable CO2 bottle, such as the Me CO2 Refillable Bottle 2000 g
- CO2-resistant tubing, a bubble counter and a diffuser
- A check valve to protect the regulator from water, such as the Me CO2 Safety Flow Steel
- A drop checker to monitor the CO2 level, such as the Me CO2 Check Glass
How to set it up
- Screw the regulator onto the bottle's W21.8 valve.
- Connect the tubing, bubble counter, check valve and diffuser.
- Open the bottle slowly and check the working pressure.
- Set the bubble rate with the fine-adjustment valve, then adjust gradually over a few days while watching the drop checker.
Frequently asked questions
Does it have a solenoid valve?
No. CO2 runs continuously. For night switch-off on a timer, choose the Me CO2 Regulator Ultra.
Single-chamber or double-chamber – what's the difference?
In a single-chamber regulator the working pressure can change slightly as the bottle runs low, so check the bubble rate when the bottle is nearly empty. Double-chamber regulators keep it constant until the end.
Does it fit disposable CO2 cartridges?
No, it is made for refillable bottles with a W21.8 connection.
Brand: Me | Category: CO2 pressure regulator | Connection: W21.8
FAQ
What makes Aquarium Boutique different from mass-market stores?
What makes Aquarium Boutique different from mass-market stores?
We don't sell everything — we sell only carefully selected products, personally tested. Every item is chosen with a clear purpose: to work well and last long. You don't need to guess about quality — we've already done that for you.
Do you ship to my country?
Do you ship to my country?
Yes, we ship across all of Europe. For Bulgaria we work with BOX NOW and Speedy — fast and reliable home or locker delivery. For other EU countries we use international courier services.
How quickly will I receive my order?
How quickly will I receive my order?
For orders within Bulgaria, we typically deliver within 1–3 business days. For other EU countries — usually 3–7 business days depending on location.
Can I return a product if I'm not satisfied?
Can I return a product if I'm not satisfied?
Yes. If something doesn't meet your expectations — contact us. We have a clear and fair return policy. Your satisfaction matters to us and we will find a solution.
Do you offer advice on product selection?
Do you offer advice on product selection?
Absolutely. Our team keeps aquariums and knows the products personally. Write to us — we'll help you choose the right solution for your tank, budget and experience level.
Are your products tested and approved?
Are your products tested and approved?
Yes. Every product in our store has gone through our personal selection and testing process . We only work with trusted brands and don't list products we don't believe in.
What payment methods do you accept?
What payment methods do you accept?
We accept all major payment methods — credit and debit cards, PayPal, and cash on delivery for Bulgaria. All payments are secure and encrypted.
How can I track my order?
How can I track my order?
After your order ships, you'll receive an email with a tracking link. You can follow the status in real time directly through the courier's website.

