Please continue to update your progress with the Cyano. I am having the same issue in My 1100 tank looks about the same. I've tried Hydrogen Peroxide and see no results. I have ordered Chemiclean but it has not yet arrived. First 24 hours really look good.Problem 1 has been red cyano. Example photo below. Lands on sand and rocks. Has been defying basting and vacuuming. Let’s see how it does against Chemiclean!
Twentyfour hours later: