Betta Choice Thermo Flow Bio Balls 1050

Replacement Bio Balls for Betta Choice Thermo Flow Canister filter 1050. It is advisable that you clean the filter in old aquarium water during maintenance. Do NOT clean the balls in tap water as chlorine and chloramines will remove the beneficial nitrifying bacteria that have colonised during the maturation of the aquarium. Replace as and when required (heavy wear, constant blocking).