I believe you already answered this on page one but did you do a power failure test and see how much water returns back to the sump? I thought I ready you did plan to run it that high. I accidently had mine running hot, err, high and during my check ended up with water all over the place. Glad it was in the garage
Nice build so far - good luck with the 300DD. That was the tank I was more or less getting but ended up going smaller with a 240 but similar height and depth. So many options with aquascape. Thanks for sharing!