I'm considering covering the sides of the tank with wrapping paper and doing a complete black out for several days. Interested in anyone's experience that has tried this. If this doesn't help I think my next stop is an algaecide. Which I'd like to avoid for obvious reasons.
I have a 80 gallon 7 month old tank that is over taken by GHA. About 75% of the rockwork is covered with it. I had very high phosphates for several months when tank was new. GFO has had phosphate levels below 0.05 ppm for 2 months now. I've been sucking as much of the stuff out with each water change as possible. I took a toothbrush to the rock work a couple of weeks ago. The stuff just keeps coming back with a vengeance. Takes 4-5 days to be back at levels prior to sucking it out.
Current tank parameters for those interested:
Nitrate 0.5ppm (algae is consuming it)
Phosphate 0.01 ppm
PH 8.1
Alkalinity 7.5
Salinity 34 ppt
Calcium 430 ppm
Magnesium 1360 ppm
Temp 78.5 °F
Tank is stocked with 2 clowns, royal gramma, leopard wrasse, lawnmower blenny, fox face, fighting conch, 4 peppermint shrimp, tuxedo urchin, lots of snails. I feed a pinch of TDO pellets (autofeeder), 1 cube of Mysis and 30 ml of OceanMagik phyto per day
I have a 80 gallon 7 month old tank that is over taken by GHA. About 75% of the rockwork is covered with it. I had very high phosphates for several months when tank was new. GFO has had phosphate levels below 0.05 ppm for 2 months now. I've been sucking as much of the stuff out with each water change as possible. I took a toothbrush to the rock work a couple of weeks ago. The stuff just keeps coming back with a vengeance. Takes 4-5 days to be back at levels prior to sucking it out.
Current tank parameters for those interested:
Nitrate 0.5ppm (algae is consuming it)
Phosphate 0.01 ppm
PH 8.1
Alkalinity 7.5
Salinity 34 ppt
Calcium 430 ppm
Magnesium 1360 ppm
Temp 78.5 °F
Tank is stocked with 2 clowns, royal gramma, leopard wrasse, lawnmower blenny, fox face, fighting conch, 4 peppermint shrimp, tuxedo urchin, lots of snails. I feed a pinch of TDO pellets (autofeeder), 1 cube of Mysis and 30 ml of OceanMagik phyto per day