Thanks! I am quite chuffed. This was a great benchmark to get to. I have had over a decade to plan this sort of thing. I certainly have a few things I would do different for very specific reasons.
IF it was a tall tank, I would have drilled the holes lower so that I could have more room to fiddle with larger fittings. From what I read, Durso's standpipes work best with a one size over vs the drain line(s). I have no complaints about noise, and am quite serious that for a SW it is very quiet. Once I get a proper cover for the sump, it will reduce noise quite a bit. With this tank, It was already quite shallow. I wanted 100% of the base to place rocks and a burrow and still bury it all. I think that had I gone lower with my holes, I might as well have a top to bottom overflow. This tank was perfectly capable to have the bottom drilled, but I wanted space more than a massive OF box. The larger fittings of 1" are long enough that it was a pipe dream. If I oversized, I would lose the bottom of the tank in that area.
In any future tanks, I plan on the lowest footprint coast to coast overflow.....more than likely it will be affixed at an odd angle so I can get away with only gluing one piece.
Any level that is not precise will throw off your box heights. I used a standard level as I would at work. I am within a 1/16" variance, but this causes most of the flow to head to that overflow (left side). The remedy was to install a quarter turn shutoff, and throttle the flow down. If you install/make your own overflows, plan on adding at least one valve unless you use a laser level and/or a machinists level.
I would have used my noggin a bit, and move the tank over to the left 3 feet and I could have put the sump in my man-cave closet. I missed the most obvious simple solution to noise. I actually did not even ponder it until I noticed it last night. I could have even mounted it level with the tank. That would have removed the need for overflow boxes totally AND allowed a pump to run at the rated GPM with minimal loss only for fittings and not for height.
Im still thrilled.
The next part of the project is DIY lighting. Im sure that a DIY 4 bulb 30" t5-HO hood could be pretty cheap. I have most of the materials already. I don't want to go overboard, and really want to focus on an ample amount for mushrooms and polyps....Would this amount of light be beneficial to other coral types? I have never used t5, and am interested in others' experiences with them. This is the first time I have built a tank out and have not turned to metal halide, only because I don't want to sun burn the resident(s)
Thanks again!