Any advice greatly appreciated. The Bad Stuff: I have GSA on the glass since yesterday. Not loads but still..... I have short black algae on Hygro Siamensis/E. Tennellus/Anubias/Various Mosses/Various Crypts/Nessea Podicellata/Ludwigia Repens. All of the above plants are otherwise healthy and piling on growth. Since 2 weeks ago, I have been dealing with cloudy water. White rather than green. Huge W/C reduce it somewhat. Dosing seems to cause it. I have alternatively stopped trace dosing and MGSO4 dosing to rule out interactions. No luck. My Dosing: KNO3: Conc: 1ml = .50ppm Dosed on Day 1/3/5: 60ml KH2PO4: Conc: 1ml = .54ppm: 6ml MgSo4: Conc: 1ml = .01ppm : 50ml Trace dosed on days 2/4/6 The good stuff: I have E. Stellata which I've brought back from the brink of death after a late delivery nearly wiped it out. It is unaffected by the algae and grows at least 4 inches every week. I have Downii, again unaffected by algae of any sort, not spreading but no dying either. Lighting is 2 x 39W T5 over 200L for 11 hours. and 4 x 39w T5 for 2 hours at noon. Filter is an Eheim turning over 700L P/H backed up with 2 Eheim powerheads turning over 300L p/h... Weekly W/Cs and scrupulous cleaning to remove any decaying matter. Is it time for a blackout?