Planted Tank Guru
Join Date: Jun 2010
Location: philadelphia, pa
I purchased a drilled 125g for a planted tank. I plan on using a sump. For a tank that size, that is already drilled, the benefits of a sump outweigh the cons, to me.
If you want to go with canister(s), you can get bulkheads that seal the drilled sections, then hide the canister tubes in the overflow.