If you have NO3
and algae problems, I'll bet money you also have excessive PO4
are the two primary sources of fuel for nuisance algae's. PO4
over 0.03 meg/l is too high and will cause issues such as you are seeing. Some people need to use two DI
units after their RO
b/c one will not always remove all the PO4
from the tap water. So in that case, if not using two DI
units, every PWC
adds more fuel to the problem and is counter productive.
1)Buy a quality PO4
test such as Salifert brand. Many others don't go low enough on the scale to be of any use to SW
aquarist who need to be able to detect even minute amounts.
2)Test your tank AND source water for PO4
. Levels above 0.03 meg/l are unacceptable (even more so if your already having algae issues). If levels are too high take steps to correct it such as large PWC
's using PO4 free
water and use a PO4
reducer such as Rowaphos or Phosban. A reactor utilizing either media would be a wise investment for you IMO
, though you can just place it in a bag in a high flow area and receive some benfit.
3)Don't overstock or overfeed(or add any new animals, esp. fish, for that matter until things clear up). Feed sparingly until the algae is gone.
4)Keep water flow and tank turnover high. Algae will grow faster in low PH tanks and areas.
5) Manually remove as much algae as possible. Giving the rock a good scrubbing and rinsing them in clean SW
will help provide a "fresh" start.
6)READ. Search the forums and the web. You will literally find thousands of posts on this subject w/ tons of ideas and info.
and good luck