Hello.... wanted your thoughts, opinions, examples, photos etc. I am about to drill the back of my 40g Breeder. The primary requirements are that the overflow has to be "IN" the tank and the hole has to be on the back wall. I've got a couple of ideas of how to go about it but wanted to see if there were any examples and suggestions here on BAR. The circulation through this tank will be pretty slow (but high on flow) and I want the tank to be as quiet as the display. I planned on drilling a 1 3/4" hole for a 1" bulkhead. then doing an elbow flush off the bulkhead pointed up with a 1" to 1 1/4" adaptor to a 1 1/4" VERY short Dursa. Is this a good way to go about this? I'd appreciate your thoughts...