E15 FerActiv | Iron Fertilizer Size:20 Tablets You can fill it with

You can fill it with bagged filter media

this is of particular benefit in heavily-stocked

always wash your hands immediately after use and avoid contact with your nose and mouth prior to washing

it will function solely as an aerobic filter

I say powerful because in my 5mm sump the grip is extremely solid

E15 FerActiv | Iron Fertilizer Size:20 Tablets You can fill it withIron 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