I used to but now that I am running FM Ultralith I no longer need to. I used to use RowaPhos 24/7 in a reactor changed every 6 weeks but could not keep my phosphates below 0.06 ppm. Now I get 0.00 ppm phosphate. It's one of the things that I'm really happy about with the FM program. The reduction in algae of all kinds has been great.
So I am "No, I choose not to"
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