wow you have been bisy little bee. if were doing all of the above then that should have worked I know my tux urchin does not eat the hair algae once it is long but some of the fish do so I have some extra food in the tank. I only have a few very little spots where it grows now, which is ok by me. Having a little bit growing insures there is food in the tank and if anything happened and I could not get back home then the fish would eat it.
as I said before your tank is now looking good so keep up the good work I think the fuge is what helps the most with Hair algae, the macro takes the PO4 out of the water before it returns to the tank.

Bill