New Filter on Old Tank and vice versa
Hello from a noob to this site :-)
I want to ask about taking a running and healthy filter from an old tank and swapping it directly over to a new tank, and placing a new filter on the old tank.
Old tank is 65 gal with a big eheim 2080 1200xl canister and an additional small canister, both well established. Lots of plants and probably tons of bacteria in substrate.
New tank is a 100 gal with previously used (somewhat dirty) substrate and a sanitized tetra ex1200 canister.
I would like to run the big eheim on the new tank, and use the new tetra on the old tank.
1. Will i possibly lose the bacteria in old filter by running it on new tank with basically clean substrate?
2. Would placing the new filter on old tank (and possibly stirring up substrate a bit so filter sucks up some gunk) be enough to get that filter established and continue the health of that tank? Or do i need to swap some media between the filters, (which i don't really want to do because their shapes and sizes are not compatible)?
thanks so much for suggestions!
PS Since new tank is already filled and partially planted, i think it's too late to break in the new filter by placing it on old tank for a couple of weeks before switching the Ehiem to the new tank.