Hobby Filterschaum grob Schwarz 50 x 50 x 5 cm Mikrogranulat This keeps your koi in

This keeps your koi in top condition and makes them resistant to any diseases

Important to know: Plants can only absorb so-called bivalent iron

Thanks to the enclosed clips

we recommend working with larger CO2 for more than 60 liters)

beneficial for fish in fresh water

Hobby Filterschaum grob Schwarz 50 x 50 x 5 cm Mikrogranulat This keeps your koi inAquarium filter material The Hobby filter foam is an indispensable accessory for all aquarists who want to keep the water quality in their freshwater or saltwater aquarium at a high level. With a coarse pore size of 10 ppi, the filter foam is ideal for all commercially available filters and can be individually cut to size. The dimensions of 50 x 50 x 5 cm provide enough material for several applications. Using the filter foam removes dirt particles