Delivery throughout the EU

MasterLine All In One Lean - Complete Fertilizer for Soil Substrate Planted Tanks

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Trusted by 500+ aquascapers

Regular price €9,68
  • Tuned for active soil substrates
  • Feeds plants through the roots
  • Slower growth, less trimming
  • Controlled nitrate for stronger colour
  • Safe for shrimp and all aquatic life

When your tank sits on active soil, the water column does not need to carry everything. Lean is calculated to push plants to feed through their roots, giving slower, sturdier growth and deeper pigmentation. Needs a soil substrate and CO2.

Size

Fast delivery (1–5 days EU)

Carefully packed and protected

Tips from real aquascapers

Description

MasterLine All In One Lean — Built for Soil-Substrate Planted Aquariums

MasterLine All In One Lean is a complete macro- and micronutrient liquid fertilizer developed specifically for aquariums running an active soil substrate. Rather than pushing fast growth from the water column, its formula is calculated to encourage plants to draw nutrients through their roots — resulting in slower, sturdier growth with noticeably richer pigmentation.

Why choose the Lean formula

  • Root-driven feeding — nutrient ratios are tuned so plants pull more from the substrate, not just the water
  • Slower, healthier growth — less trimming, more stability, ideal for competition aquascapes
  • Stronger pigmentation — controlled nitrate levels help colors develop more intensely
  • All essential elements in one bottle — N, P, K, Mg, Fe, Mn, Zn, B, Cu, Mo
  • Safe for shrimp and all aquatic life

Composition (per 100 ml)

Nitrogen (N) 0.41%
Phosphorus (P) 0.1%
Potassium (K) 2.4%
Magnesium (Mg) 0.24%
Iron (Fe) 0.14%
Manganese (Mn) 0.036%
Zinc (Zn) 0.023%
Boron (B) 0.021%
Copper (Cu) 0.005%
Molybdenum (Mo) 0.003%

Dosing

Daily: 1 ml per 30 L of aquarium water. Requires an active soil substrate and supplemental CO₂ — this formula is not intended for inert-substrate or non-CO₂ tanks. Shake well before each use.

Is Lean right for your tank?

Do you run an aquasoil substrate and want compact, well-pigmented growth?
Yes — this is exactly what Lean is built for.
Do you have an inert substrate (sand or gravel with no nutrient content)?
Consider All In One Golden instead, which doesn't rely on substrate uptake.

Important notes

  • Requires CO₂ injection and daily dosing for consistent results
  • Avoid combining with activated carbon or UV sterilizers
  • Store at room temperature, protected from light, heat, and frost
  • Professional support

    Expert help when you need it

  • Delivery throughout the EU

    Delivery to all EU countries

  • Secure payment

    Fast and secure payment options

  • Easy returns

    Лесно връщане и замяна

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FAQ

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?

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?

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?

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?

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?

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?

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?

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.