Are these diatoms?

freeze-dried blood worms.<======= thats part of the problem I had cyano when I fed bloodworms never had ituntil I fed that. once I stopped a week later it was gone I would increase flow also as probly mentioned above. that should help you out and massive water changes.

 

I'll give that a shot, thanks!

 

I was having cyno issues in my 55 gal as well. I did a couple of things and now it has been completely gone for about a month. First thing was I got a Deluxe Carbon/GFO Reactor from Bulk Reef Supply. Second thing was I increased my cleanup crew with more hermits and snails. Decreased my feeding to once every couple of days, and lastly I added some Chemiclean Red Slime Remover. This product is awesome. Within 48 hrs all the cyno was dead and easily vacuumed up. Has not returned yet. ;D

 

A lot of freshwater food (bloodworms) contain water. That water will contain nitrates and phosphates as well as other crap. its always a good idea, no matter what frozen food you feed, to strain it first.

Let it thaw in a cup with some salt water, then take a net and pour the food through it. Most nets are fine enough to catch all of the food, then pop the food in the tank

 

Cyano can infect and kill delicate corals. They smother the corals and deprive them of the light they need as well. It is a bacteria and can deteriorate the tissue if it is not blown off the corals.