I had been keeping phosphates around 1ppm since I set up my 40gal back in july. The tank had been algae free with the exception of green spots on the glass. Within the past month or so I started increasing to 2ppm, since many say green spot algae is an indication of low phosphates.
Well since I started increasing KH2PO4 the algae has went a out of control. I went from scraping algae once every two weeks or so to several times a week. It is also starting to apear on the leaves of my giant hygro.
Tank stats are 40gal with 110w CF
lighting, 4 DIY CO2
bottles (two changed every week). 50% water change once a week.
Macros dosed sat, mon, wed.
1/4 tsp KNO3
8 ml KH2PO4 (was doing 4ml) ( a mix of 250ml water and 3 tsp of KH2PO4)
1 tsp k2SO4
and 1 tsp MgSo4 and 1/4 tsp CaSo4 dosed once a week after water change.
Micros dosed sun, tues, thur.
14ml Plantex csm+b (a solution of 250 ml water and 2 tsp csm+b
I have stuck with this schedule pretty well. The only thing I have changed really is the increased phosphate level. Am I missing something here?