about 4 months old. 75 gallon, pressureized CO2, very hard water, not TOO many plants, 2 x 96 watt AHSUPPLY fixture.
50lbs Soilmaster select substrate.
I dose greg watson ferts. every other day 1/4 teaspoon kno3, 1/4 k2so4.
I should go 1/2 teaspoon k2so4...
10 - 15ppm nitrates is the high.
Because of the discus i try and do more frequent water changes and I suck up alot of this gunk when i do.
I may be under filtered but I also have a low fish load.
What kind of algea and what is the usual cause