I have a bajillion pods. Chemiclean didn't seem to do anything to them in my tank.

Here are a few things to look at first.
1 how much flow - you might need to increase the flow or point a power head toward the sand.
2. what is your po4 and no3? - you might have a nutrient issue. Tap water? if so what is your TDS. Doing water changes could be adding to the issue.
3. what type of lighting? what is your photo period? Might have to change bulbs or eliminate the red spectrum.
4. Quick fix and works fantastic redcyano rx - but will come back if other points are not taken care of. It is common for setups that have been up a year or less.
5. cyano loves low PH
6. how much are you feeding?

The plate coral does not look good - IMO i would dip it (brown jelly) and place in a high flow area.

chemiclean. Just works. If the cyano comes back, then figure out why. If not, you're done. I've used it the two times I've had cyano outbreaks over the years, and nothing bad happened.

Chemiclean used here...works great. Never had it come back.

Cyano pretty much all gone now=) no chem needed. Just a 20g water change for my. 75g tank.

check out your salt, it maybe a bad batch. I used to get cyano with H2O and after switching to Reefchem reef salt I never have any problem