I agree with Timbo. When I was fighting cyano
, I did al of the above mentioned treatments and they did help to keep it more controlled, but I never really won the battle until I switched to RO
water. Over the period of many waterchanges, It subsided and now I have no problem with it. Test your PO4
, or ask your LFS
to test for you. I suspect maybe the filters in your ro
system need replacing.
Don't give up. What appears to be an unbeatable foe, is merely a visual eyesore. You can win.