Midwest Bulkheads are very high quality, nice looking black ones, sized right for the holes. they're slip, not threaded, so you'll have to glue 'em. If you don't glue the standpipes in your overflow box, that's no a big problem if you ever want to move the tank. you'll only have pipe glued into one side of the bulkhead.
I purposely keep snails outta my tank for the reasons duanes mentions. Once I got snails in this tank, or the sump, they'd be there forever. Never get 'em all out. Plants won't work in my tank, either. So my strainers stay pretty clean. They slime up after 2-3 weeks, I can tell when the drains start to make noise.
I purposely keep snails outta my tank for the reasons duanes mentions. Once I got snails in this tank, or the sump, they'd be there forever. Never get 'em all out. Plants won't work in my tank, either. So my strainers stay pretty clean. They slime up after 2-3 weeks, I can tell when the drains start to make noise.