Ive been using rowaphos in my sump for about a week now and i can't see any difference in hair algae growth,not to sure if its got worse if anything. i haven't got a phosphate test kit yet so i can't test the water. is it to soon to see any change? i was looking at the red sea phosphate remover'has any used this with success. with the rowaphos i put about 150 mls for a 176g tank. thanks for any advice.