Anyone had any luck getting rid of hair algae?

[christyf5]

It ain't pretty but I need some sort of strategy for this stuff. I had a bit of a crash a couple months ago and the stuff popped up out of nowhere. I haven't had to deal with HA since I started in this hobby many many years ago (although I've dealt with every other kind of algae it seems). So far I've been picking/siphoning it out but to no avail. I added about 10 astreas and an urchin. So far about 4-5 snails have croaked (also have some cyano and some sort of odd brown cyano, I assume that is killing them but who knows). No interest in a lawnmower blenny because once the HA is gone there will be no more food source and rehoming fish here is next to impossible.

So, new bulbs coming within the week. All parameters are good:

temp 78.9
SG 1.026
alk 9 dkh
ca 450ppm
PO4 0.03ppm
NO3 5ppm

So, anyone have any magic bullets or will it be a combo of time and diligence. I don't have a lot of time for the tank lately but if someone has a good success story it would be encouraging