Legend Phosphat™

Phosphat is one of the main three macronutrients (nitrogen, phosphat, potassium: NPK) required by plants and can often become the limiting factor to growth in a flourishing system. Legend Phosphat™ adds the important macronutrient phosphate to your tank. Your plants can draw on plentiful resources again and will thank you with lush growth. Unlike competing products that mix nitrate and phosphate in a fixed ratio, Legend Phosphat™ (being nitrate free) allows you to dose phosphorus according to the needs of your plants without the risk of overdosing nitrates. When used as directed, Legend Phosphat™ will enhance and accelerate the growth of aquatic plants without enhancing algae growth.

Weekly water changes of 25% to 50% are recommendable. The dosage can be raised or lowered depending on your requirements. If your tank water shows high readings of phosphate from the start, this fertilizer is not suitable for your aquarium, though. It has been designed to prevent the accumulation of large concentrations of macronutrients. If high levels of phosphate occur, please reduce the dosage.

For maximum benefit, use with Legend Nitrogen™ and Legend Potassium™.


Sizes: 100 mL, 250 mL, 500 mL, 1 L, 5 L


2 ml Legend Phosphat™ per 100 liters of tank water adds the following nutrients:


PO4       0.10 mg/l

K            0.04 mg/l


Dosage per 100 litres

Lots of light (>0.5 Watt per litre) + CO2     2 ml per day

Little light (<0.5 Watt per litre) + CO2        1 ml per day

No CO2 supply of 1–2 ml per week


This dosage suggestion is just a guideline. The dosage may have to be raised or lowered depending on the conditions in your tank in order to give you good results.


  • In inert substrate tanks, do not allow the phosphate concentration to fall below 0.2 ppm
  • Take into consideration that all active soils absorb the phosphate, leaving water column values ​​of 0.1-0.2 ppm
  • Do not contaminate the solution with aquarium water
  • Do not ingest and keep out of reach of children and pets
  • Store at room temperature. Protect from light, heat and frost
  • For aquarium use only


Legend Phosphate MSDS 20230622.pdf


Shrimp Friendly

Storage: at room temperature. Protect from frost and heat. Keep out of reach of children and pets.

Use: For fertilization of ornamental plants in an aquarium only.
See the pack for detailed dosage recommendations. Note: Official guidance recommendations take precedence.


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Phosphate fertilizer

Suitable for batch fertilization

Booster for aquatic plants

Perfect for aquascaping

Solution based on phosphate (PO4) and potassium (K)
Separate control of the nutrients
daily or weekly dosing