I've been reading the explanations on building overflows and have started building one myself, but have a few questions. What do you use to drill the holes in the acrylic for the bulk heads? When referring to a 3/4" pipe for the return, is that inner or outer diameter? How do you cut the teeth in the top of the inner box? What diameter should the U tube be in relevance to the drain pipe? Does the size of the box matter, or just the piping?
Sorry for all the questions but i want to make sure i do this right the first time.
Thanks
Sorry for all the questions but i want to make sure i do this right the first time.
Thanks