also keep in mind that although you may be reading 0 for phosphates, the fact that you have algae means there are indeed phosphates in the water. Usually the algae is just using it up to the point where it is nearly undetectable.
Cyano is usually caused by areas of low flow and high nutrients. When you do the water change are you just skimming from the water surface or getting down into the bed?
__________________
75 gallon with 20 gallon sump in the works.
R. Bacchiega. Tattooer
I didn't smack you, I simply High Fived your face.
I've got so much glue on my pants it looks like a Friday night gone horribly wrong.
|