hello...
i consider about changing my filter, but i confused what to buy
can i have 198 gallons canister filter for my 20 gallons tank?
there's a big sale in local store and since i will upgrade my tank sooner or later, i find it a good way to safe money...so i won't have to buy another filter for my upgraded tank
but for the mean time, will it be ok for my tiny winnie tank?

