good ol' cyano Q's

[nanmer]

Sounds like you have fairly good flow. Perhaps if you targeted a certain area of the rocks and gave them a good blast for a little while. I had some fairly large rocks and found that moving the power head around on them peeled the cyno off. The other thing I found excellent were two tuxedo urchins. Since you have a FOWLR, this is not an option. I found the little guys peeled the cyno off to wear???