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Anyone ever tried using GFS extract against algae. I have found a couple places (non aquarium realted sites) that say it is very effective in a 70-200 ppm dose and non toxic to fish.
Can someone explain how u get a 70 -200 ppm dose... in terms of ml per x gals?
Can someone explain how u get a 70 -200 ppm dose... in terms of ml per x gals?