Funny you say that because I like the bulkhead placement as high as possible for the same exact reason the durso standpipe. The higher the bulkhead the less water pressure etc. on the hole.I like drilling closer to the bottom, because I like durso stand pipes and overflow boxes.
Is this a 29 gal tank? Is the overflow DIY, how wide is it? Looks like a pretty good setup.Mine is a full length overflow, but the right side plumbing (from the front of the tank) is seperated in the overflow for use in a CLS. The overflow has tons of surface skimming ability, with a very small amount of space taken up.