I bought a used saltwater tank with two holes in the bottom next to each other for a sump. They’re slightly different sizes. One of them is just slightly too small to accept a 1/2” bulkhead. Do they come smaller than that? What am I missing here?
I don't know. I bought two of these from Home Depot. They fit the bigger hole., but not the smaller hole. Will this work for the bigger one? And then what do I need to buy for the smaller one? Maybe I shouldn't have got these. I don't know what "schedule" means.
I'm gonna be coming up with some kind of plumbing tube up high so I can decide if I want to deal with a sump or not.