The pH Hydro Pro Pen conveniently gives quick and accurate pH readings for those that are time conscious.
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Test for Ammonia NH3 / Ammonium NH4
High ammonium levels indicate a disturbed or not fully developed bacterial activity in the filter.
Ammonia (NH3) formed from ammonium (NH4) in case of pH values above 7 is especially dangerous.
Even ammonia values of 0.02 mg/l lead to gill damages in the long term.
Therefore you should always check the pH value in addition to the NH4 level.
Directions for use:
Shake reagent bottle well before using!
Do not allow tested water to contact aquarium or pond water!
Close reagent bottle immediately after use and do not exchange caps.
Store at room temperature and away from light. Keep locked up and out of the reach of children.
For testing ornamental fish aquariums and pond water only.