I can't get that info. until I get home tonight, which will be late. We have the sump baffled, if that's the right word. I don't think it's drilled at all...the overflow dumps from a tube above and the other end has the pump which is connected to the squids. I'll try get photos tonight.

I do have another that is 50 gallons and is drilled...will get some photos of that as well...may end up selling that one.

Dena