Delivery throughout the EU
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MasterLine All In One Red - Nitrate-Free Fertilizer for Vivid Red Aquarium Plants

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Trusted by 500+ aquascapers

€9,68
  • Deeper reds without chasing nitrate
  • Full micronutrient mix in one bottle
  • Safe for shrimp and fish
  • Made for heavily stocked tanks
  • Simple daily or weekly dosing

A complete liquid fertiliser built for one job: letting red-leafed plants show their deepest colour. It leaves nitrate out on purpose, so in a well-stocked tank where the fish already supply it, reds and oranges come through instead of fading toward green.

Size

Fast delivery (1–5 days EU)

Carefully packed and protected

Tips from real aquascapers

Description

MasterLine All In One Red — Nitrate-Free Fertilizer for Maximum Red Pigmentation

MasterLine All In One Red is a specialized liquid fertilizer that deliberately excludes nitrate from its formula. High nitrate levels are known to suppress red and orange pigmentation in aquatic plants — by keeping nitrate low, All In One Red allows red-leafed species to display their most intense coloration.

Why aquascapers reach for Red

  • No added nitrate — the defining feature that unlocks deeper red and orange tones
  • Built for heavily stocked tanks — ideal where fish already supply nitrate naturally through waste
  • Works with nutrient-rich substrates — pairs well with aquasoil or substrates enriched with MasterLine Root Caps
  • Complete micronutrient support — potassium, magnesium, iron, manganese, zinc, boron, copper, molybdenum
  • Safe for shrimp and all aquatic life

Composition (per 100 ml)

Phosphorus (P) 0.1%
Potassium (K) 3.6%
Magnesium (Mg) 0.3%
Iron (Fe) 0.12%
Manganese (Mn) 0.036%
Zinc (Zn) 0.023%
Boron (B) 0.021%
Copper (Cu) 0.005%
Molybdenum (Mo) 0.003%

Note: contains no nitrogen (nitrate) by design.

Dosing

Daily: 1 ml per 30 L, or weekly: 7 ml per 30 L. For strongest pigmentation, keep tank nitrate between 5–10 ppm (from fish waste or substrate) — do not let it drop to zero. Combine weekly dosing with a 30% water change.

Is Red right for your tank?

Do you have a heavily stocked tank with nutrient-rich substrate and want the reddest possible plants?
Yes — this is the formula built for exactly that.
Do you have a lightly stocked tank with an inert substrate?
You'll likely need a nitrate source too — consider pairing with MasterLine Nitrate to avoid deficiency.

Important notes

  • Requires CO₂ injection for best results
  • Avoid activated carbon and UV sterilizers, or increase dosage to 2 ml per 30 L daily if unavoidable
  • After water changes over 50%, triple the dose
  • Store at room temperature, away 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.