ok here we are then.
Question: I am treating my tank and have put an extra filter in to replace the zeolite cartridge i took out and i still have some space left on top of the 2 sponges. Would it be worth chopping a filter block in half and putting it on top to give more space for the bacteria to grow on?
Question: I am treating my tank and have put an extra filter in to replace the zeolite cartridge i took out and i still have some space left on top of the 2 sponges. Would it be worth chopping a filter block in half and putting it on top to give more space for the bacteria to grow on?







