This is a water test to monitor the iron concentration, iron is a vital nutrient for water plants. The Sera Fe-Test shows the iron level in aquariums and garden ponds. Iron is an essential nutrient for aquatic plants. Optimum value of iron is 1 mg/l.
If necessary use Sera Florena and Sera Florenette A (for freshwater aquariums) or Sera Florenette T (for ponds) for effective plant fertilisation.
Yellowed plant leaves are a clear sign for a lack of iron.
To start with the iron contents of both tap and aquarium water must be determined. If you already establish iron in tap or spring water, you should pay particular attention to the fact that often it cannot be used by the plants. It also damages the mucous membrane of the fish.
