Hello; OK, well whatever solid material that has been in the cycled tank will have colonies of beneficial bacteria (bb). It can be substrate, decorations, and such. Just take some of any solid material from the old tank and put it in the new tank.The sponge isnt but the tank is
On a different subject. The method you use in posting a problem is making giving decent suggestions difficult. More detailed information might help me understand better how to reply.



