drilling and over flow boxes

[The Grizz]

Correct this is a vertical overflow with 1 - 1" bulkhead holes in the bottom, one for a Durso drain, the other for a return.

I dont get glass or acrylic here in Red Deer. Glass shops here are way overpriced, I usually have scarp glass in my shop and just cut it myself or get it in Edmonton from a buddy who owns a glass shop. The acrylic I get at Sabic in Calgary, bought a full 4' x 8' sheet of 3/16" black a while ago just to have some extra around after I finish my coast to coast overflow for my 300 gal. I could probably cut you a couple strips out of it cheaper they you going to Calgary to get it.

[Ultimatom]

that would be awesome ! Im a bit on the fence about the teeth thing thou. I see some ppl dont use them (like on the pic i posted) and some do. I'm under the impression that it would create noise. Am i wrong? Id love to see ur set up or at least how you did your ctc overflow. Did you use the bean animal method?

[The Grizz]

You really need teeth on overflows because any small fish that gets to close will be in your overflow or sump constantly. They don't create any noise, the noise comes from the water level in your overflow. I have not built my 300 yet, just haven't had time yet. Not sure what I am going to do yet for my plumbing.