Thanksi guess i will do this then! However i have a small doubt, when you say clean off the running filter in the new tank you mean squeeze the sponge of the old filter in the new tank water right? i am sure that will dirty the water and transfer the beneficial bacteria however do i need to completely squeeze it or just one or two times and should the fish be already in? or after i squeeze i will let the new filter to run and then transfer the fish ?
Squeeze out the sponge and if you have a sack of bio max or other media you can put it in a run it between your hands shaking it around. Have the new filter up and running before you do that. So you ensure the old bb getting into the new filter.
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