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Easy to use and accurate test kit for measuring the PO4 - phosphate level of water in your aquarium.
To know the PO4 concentration is very important and useful cause if:
- too low: corals will stop to grow - especially LPS corals - and starve even to death
- too high: can trigger the unwanted nuisance algae-growth meanwhile blocks corals and calcareous algae growth
ReefCentral.eu advice: Optimal range of PO4 is between 0,02 to 0,1 ppm (mg/l), depends on what type of corals you keep or dominant in your reef tank