Jimmy120883
New Member
I've got an established tank but the filter is on its last legs so bought a new one.
Do I put the new one in the tank with the old one and run both until the bacteria builds up on the new one?
If so how long for 1-2 weeks a month?
Not sure the Internet giving different answers.
Do I put the new one in the tank with the old one and run both until the bacteria builds up on the new one?
If so how long for 1-2 weeks a month?
Not sure the Internet giving different answers.