Flourish 250ml

This micronutrient fertilizer suits aquarists who already dose macronutrients and want to add iron, manganese, boron, molybdenum and other trace elements without loading the tank with a full all-in-one formula. Its composition is built around use alongside other fertilizers, which lets the keeper control each nutrient group separately.

Why it matters

• The manufacturer states that it is intended for use together with other fertilizers that supply macro- and micronutrients, so it is not a complete product on its own.
• Its micronutrient content is meant to be combined with separate macronutrient products, which addresses the risk of micronutrient overdosing when a keeper raises macronutrient levels.
• For macronutrient shortfalls, the manufacturer recommends the separate Flourish Nitrogen, Flourish Phosphorus and Flourish Potassium products.
• The cap is graduated with notches at 1 ml intervals, so a 5 ml dose can be measured without a separate syringe.

Specifications

• Dose: one cap (5 ml) per 250 l of water
• Frequency: once or twice a week
• Storage: refrigeration after opening is recommended but not required
• Total nitrogen (N): 0.07%
• Available phosphorus (P2O5): 0.01%
• Soluble potassium (as potassium carbonate): 0.37%
• Magnesium (Mg): 0.11%
• Calcium (Ca): 0.14%
• Sulphur (S): 0.2773%
• Sodium (Na): 0.13%
• Chlorine (Cl): 1.15%
• Iron (Fe): 0.32%
• Manganese (Mn): 0.0118%
• Boron (B): 0.009%
• Molybdenum (Mo): 0.009%
• Zinc (Zn): 0.0007%
• Copper (Cu): 0.0001%
• Cobalt (Co): 0.0004%
• Sources: potassium chloride, calcium chloride, copper sulphate, magnesium chloride, iron gluconate, cobalt sulphate, magnesium sulphate, manganese sulphate, boric acid, sodium molybdate, zinc sulphate, protein hydrolysates

What it works with

The product is dosed by water volume, with one cap per 250 l, so it is suited to planted aquariums of any size that can be measured against that reference. It is intended to be used with a separate macronutrient fertilizer, and the manufacturer's companion Flourish Nitrogen, Phosphorus and Potassium products are recommended for correcting macronutrient deficiencies.