I have dosed Seaklear phoshate remover (bought it on line from a pool place) into a 10 ml sock. Mixed 1-1/2 ml into a gallon of RO water. Slowly dripped it into sock over a 6-8hr period. I have done this about 4 times over a couple of months. I have not tested the phosphates but it has greatly reduced my hair algae. As far as changing the method around, I'm not so sure. This method is simple and it definately works.
I agree that is the best all around method but one thing keeps lingering in my mind.
Per Reefkeeper2:
I don't remember what the dosage was when I was using the socks. I tried different dosages at that time. I also noticed that when using the socks I could not get the phophate levels down as far as I liked, no matter how much of how often I dosed. Randy Holmes Farley said that was because there was ultra fine particulate getting through the sock and my test kit would pick that up. When I read about public aquaria using sand filters with lanthanum, I thought of using my vortex diatom filter. It worked like a charm. After a treatment using the diatom filter, my photometer would give a reading of 0. There were also no ill affects from any of my animals.
I charge the filter with diatom powder and superchar norit carbon. I take 50ml of RO/DI and mix it with 10ml of Seaklear pool phosphate remover. I have a syringe pump that injects 4ml an hour of this mixture into the diatom. My total tank volume is about 550gal.
I usually have to clean and charge the filter twice, as it will become clogged with precipitate in about 2-3 hours.
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While that may be more of a pain, I have to admit I am OCD about stuff like that and I cant argue (trust me, I am trying) with a "0" reading on phosphates with that method, and, if that is so, would feel so much better about the things in my tank.
Now, this method is not for everyone for sure, but, I like to sit back on a Sat or Sun so, hanging out watching the tank for a few hours is fine with me

. Also, once I get it dialed in, I can always adjust the time schedules to an amount I administer etc............ me thinks?