I've been dealing with cyano for months now, I just added 2 Hydor 4's to the tank and the cyano is almost gone, been about a week since i added them.
_________
75g mixed tank
2x 250w HQI MH
4x65w T5 accintics
Coralife 220 Skimmer
29g fuge/sump
1400gph Overflow
29w UV |