Drilling acrylic

[sphelps]

A hole saw works just fine. Drilling cast acrylic is very easy and doesn't require any special procedure, extruded however tends to melt and could jam up the bit which could result in a crack. For extruded a little water to keep the material cool is a good idea and a little finesse goes a long way

[rstar]

So the big question Steve is which acrylic do you use for your sumps as you built mine for me!

[rstar]

Also should the bulkhead be halfway submerged and half unsubmerged to get air out of the line? ie: When the sump is running should it drain where the max water level comming into the sump is?

[sphelps]

That sump was made from extruded acrylic. You'll want to drill the bulkhead so it is centered where the water line will be or slightly higher. That way it will do exactly what you described.