Netting bag design for hold biomedia / substrate. It make maintenance job easier. You can put the bioball / biomedia in a netting bag and place inside canister filter. With this you can direct take out the netting bag and wash it during for maintenance. Woo ~ super convenient !
You can also use with Chihiros Habitat as substrate layer.
Colour : Black
Size available : 20x15cm | 30x20cm | 40x30cm