Hi ...I just bought a 75 gallon tank and want to use a couple of filters I have on hand. One is an Ehiem 2213 canister rated to 66 gal and the other is a Fluval U4 rated to 60 gal. Will these two filter used in conjunction be sufficient?
Yes, probably. I've never used two filters on a tank before, because I've never had a tank big enough to need it. But it should work. Just make sure both are cycled.