You can either plug up the hole for future use, or you can use those holes and connect to the canister filter.
If you go fresh, I would plug the hole and use the canister because the canister does a better job circulating the water, if you don't mind having the heater, filter hose, and expose as compared to using a sump w/ overflow where everything is hidden.
As far as seals goes, I do not have any experience in that department.
If you go fresh, I would plug the hole and use the canister because the canister does a better job circulating the water, if you don't mind having the heater, filter hose, and expose as compared to using a sump w/ overflow where everything is hidden.
As far as seals goes, I do not have any experience in that department.
