PO4 Pro Test
PO4 Pro Test

PO4 Pro Test

Regular price $49.00 $49.00 Sale

PO4 Pro Test

Phosphate test professional for fresh and saltwater aquariums

Measuring range & accuracy

Measurement range for freshwater: 0.01 - 1.0 mg/l (ppm)

Measurement range for saltwater: 0.01 - 1.0 mg/l (ppm)

Accuracy: 0.02 mg/l (ppm)

About phosphate

Phosphates are important nutrients for all plants and are vital for the energy metabolism of every living cell. Phosphates are released into the aquarium water via food and the decomposition process of organic matter. However, an unregulated increase in the phosphate concentration creates problems, such as significant algae growth. In addition, phosphates in salt water aquariums can seriously inhibit the deposition of calcium carbonate in the skeleton formation process of hard corals and, in turn, for their growth. On the other hand, there can be a shortage of phosphate if there is a high stock of plants and / or corals and a low fish population. In this situation, phosphate will need to be added. Some reef aquariums are intentionally set up to have ultra-low nutrient conditions – phosphate shortages can occur in cases such as these.

In freshwater applications, a phosphate concentration of up to 0.4 mg/l (ppm) is suitable, however 1 mg/l (ppm) should not be exceeded. Even a concentration of 0.02 mg/l (ppm) is adequate for supplying aquatic plants with nutrients. The phosphate concentration in natural saltwater is approximately 0.06 mg/l (ppm). However, the phosphate concentration in coral reefs may be much lower, typically between 0,01 and 0.02 mg/l (ppm).

We recommend that you prevent the concentration of phosphate from rising above 0.1 mg/l (ppm) in saltwater tanks and keep the concentration between 0.01 and 0.05 mg/l (ppm) in reef aquariums. To monitor this effectively, the phosphate concentration in the aquarium water should be tested regularly.

Package contents 

  • 25 ml / 0.85 fl.oz. of reagent A

  • 6 ml / 0.20 fl.oz. of reagent B

  • 5 ml / 0.17 fl.oz. of reference solution “standard”

  • 2 glass cuvettes 20 ml

  • 1 dosing syringe 20 ml

  • 2 colour cards

  • 1 comparator

  • 1 instructions for use

Measures in the event of unfavorable values

If the phosphate concentration in the water is too high, we recommend:

If phosphate levels are too low, we recommend (with due consideration for the nitrate concentration at the same time):





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