Dennerle Plants Liquid Plus

A complete all-in-one liquid fertiliser for heavily planted aquariums — NPK, iron, and trace elements in a single bottle.

Dennerle Plants Liquid Plus is a comprehensive liquid fertiliser that delivers all macro and micro nutrients in one formula — nitrate (N), phosphate (P), potassium (K), iron (Fe), magnesium (Mg), and a full spectrum of trace elements. It is designed for heavily planted aquariums with fewer fish, where the plant mass is high enough to deplete all nutrient groups and the fish population alone cannot supply sufficient nitrogen and phosphorus. In this context, a complete fertiliser is not optional — it is what keeps plants healthy and algae in check.

Safe for all invertebrates including shrimp, crayfish, and snails. If algae appear, reduce the dose and increase water change frequency while investigating the root cause — algae in a fertilised tank are almost always a symptom of imbalance, not excess fertiliser alone.

Pro tip: Combine Dennerle Plants Liquid and Plants Liquid Plus to fine-tune NPK and iron levels independently to your plants’ specific requirements.

Key Benefits

• Complete fertiliser — NPK + iron + trace elements in one bottle
• Ideal for heavily planted, low-fish aquariums
• Higher potassium concentration versus standard Plants Liquid
• Safe for shrimp, crayfish, and snails
• Can be combined with Dennerle Plants Liquid for custom dosing precision
• Available in 125ml and 300ml

Nutrient Declaration

Per 10ml in 100 litres of water:
N: 1.3 mg/l — P: 0.1 mg/l — K: 1.0 mg/l — Mg: 0.4 mg/l — S: 0.9 mg/l
B: 0.004 mg/l — Cu: 0.006 mg/l — Fe: 0.07 mg/l — Mn: 0.004 mg/l — Mo: 0.002 mg/l — Zn: 0.002 mg/l

Dosage Guide

1 pump stroke = 2ml per 20 litres. For a 100 litre aquarium:

• Without CO₂: 10ml per week
• CO₂ + low light: 2ml per day
• CO₂ + high light: 4ml per day

Divide the weekly dose by 7 for daily dosing. Recommended alongside a weekly 25–50% water change.

FAQ

What is the difference between Liquid and Liquid Plus?
Liquid Plus contains nitrate (N) and phosphate (P) in addition to iron and trace elements — making it a complete fertiliser suited to heavily planted tanks with fewer fish.

Is it safe for shrimp?
Yes — fully safe for shrimp, crayfish, and snails.

What if algae appear?
Reduce the dose and increase water change frequency. Check all water parameters to identify and address the root cause.

Ideal For

Heavily planted aquariums with a low to moderate fish population where all nutrient groups need supplementing. High-tech CO₂-injected planted tanks with demanding plant species. Aquascapers who want a single-bottle complete fertiliser solution.

For community tanks with more fish and fewer plants, Dennerle Plants Liquid (without N and P) is the more appropriate choice.

A complete, precisely formulated fertiliser from one of the most trusted names in planted aquarium care.