Cyano starting to get worse!

[Ripnlips82]

Thanks for the input everyone. I use chemipure carbon, no bio pellets or selcon. I feed a mix of frozen washed in ro water, reef chili NLS pellets, krill, mysis etc.
Po4 is .03 or less just tested.

 

[frags]

The algae feeding on phosphate that your sand is releasing! You need more gfo or start replacing some sand with new sand.