The hair algae is still a HUGE issue, but I am taking steps to resolve the problem. I've cut way back on feeding, added a precision marine skimmer, and have almost got my monster refugium up and running.
The skimmer has been hooked up for a week, but still no skimmate...any thoughts?
I've also virtually silenced the overflows by modifying the plumbing. Each overflow had a return and a durso drain. Now, the return runs up and over the top of the tank. All four holes in the overflows are drains. I still have a durso in each, but they now only handle very little flow. The former returns are running full siphon, each with an in-line ballvalve to restrict flow a little. Hopefully this means an end to the ridiculous amount of micro bubbles in the DT.