How else to do battle with hair algae

[Okguy]

1) good
2) flow is about 800 gph or 33 times which is Ok
3) did a quick search on another site and found most people felt it had phosphates in it and also messed with Alk and Calcium levels. I can't confirm this personally but maybe worth investigating
4) personally think it's a little low but close enough not to worry about (I like 1.5 x 2 times the volume)
5) a new tank is a new tank, even if it's part of an old tank. It takes time for a new setup to find its equilibrium. Everytime you make a change a new equiliqrium needs to be reached.