phosban reactors

[Koresample]

I have a bit of a hair algae problem that i have been trying to fix. I have been following Myka's suggestions from her articles, purchased an RO/DI 4 stage purifier, changed my skimmer from the Sea Clone to Tunze 9002 (just got it yesterday), changed out about 70% of my water with my new RO/DI water, IO salt (as i just ran out of DD brand), my chaeto and macro in my refugium are growing like crazy, cut the algae during water changes and even tried boiling water on it. I measure no Phosphate (probably due to it all being used by the HA) but its obviously still there. I am thinking of putting a Two Little Fishies Phosban reactor on the tank to step up my battle. Does anyone use one, is it wise to keep one running all the time?