I have 5 tanks all with HOB filters and would like to add bio balls to all of them...need help tho, which ones are the best to buy and is there a brand that I would never have to change out just maybe rinse off with tank water?
Thanks in advance
Sent from my SPH-L900 using MonsterAquariaNetwork App
Thanks in advance
Sent from my SPH-L900 using MonsterAquariaNetwork App