Cannot get rid of cyano!

[Nate]

Originally Posted by MarkoD

no because there is no need to do water changes if a person has other methods of nutrient export.

i dont have a single patch of hair algae or any other kind of algae in my tank

You ask for advice as long as its what you want to hear. Do some water changes I bet your cyano goes away.

I maintain about 50 tanks in Calgary and tend to only get cyano in tanks with too low flow, tanks that have had persistent low kh, and tanks that dont get enough water changes. Water changes and increased flow have solved the problem Every time. And yes, it's at about the 8-14 month mark when you tend to see this problem
Build up.

Do you clean your gravel?