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it floats for easy retrieval
better water quality due to better digestibility of the food
You can fill it with bagged filter media
it will function solely as an aerobic filter
E15 FerActiv | Iron Fertilizer Size:20 Tablets it floats for easy retrievalIron is of crucial importance for all aquarium plants. It is needed for generating the all important chlorophyll. Without chlorophyll, the plant cannot photosynthesize. The effects of iron deficiency are immediately apparent: the young leaves appear pale and yellowish (iron induced chlorosis). Please note: plants can only absorb divalent "white" iron. This is unfortunately not stable in an aquarium, and is quickly oxidised to become effectless
