although I certainly don't think it has to be drilled, I like a drilled return. I have always just placed my return nozels close to the surface. It helps with surface agitation and allows very little back siphon. I don't use or trust check valves either but it hasn't been and issue. I understand this point of view though.
Yes, watch a couple of videos. It really is easy, just remember to take your time. There is no rush, and if it takes 5 min to drill the hole that's fine. But looks at over the back too, just to look at all options.
Is there enough room in the bottom in the overflow? Or will you need to drill it in whet ever will be the back of the tank? 1" thick glass will make it even safer to drill.
In that case I would drill a single hole for the return and put a Y in the lockline to divide the flow. One less hole to drill and just as effective.
Also, being i work at home depot again.... specifically hardware. i recommend not using the bosch bits. Although Bosch is a great name, they 1) dont have big enough sizes and 2) tend to do a bit more damage than the other bits.
agreed. this was just the easiest way for me to link. sorry.
Good point, I would have forgotten all about that. I could see it now, tank is drilled (all excited) put the bulkhead in......doesn't fit.
