Thank you for the compliment!
What exactly are your parameters at? Please give values.
It takes time to deplete the P04 being released by the LR & sand. It did so 6 years ago with my tank which the LR had stewed in "Tap Water" for about 17 yrs. Please do not give up. The battle can be won if you are patient.
With most if not all "Red Slime Removers" it is stated in the directions that you may need to do two treatments.
Current state of my tank after several weeks of dealing with Cyano via several times per week water changes,and now weekly, running GFO through a reactor, dosing 1 gallon of Lanthanum Chloride at a value of 5ml of lanthanum to a gallon of ro/di water. Siphoned red & green slime out. Four #4 koralias running plus two return pumps - so plenty of flow. Three days of lights out, several weeks of 100% blue leds on, and 30% white leds on for four hours, feeding once per week. (NO FISH in the tank just corals & CUC)..
I also still see some "Cyano", but happy to report that it is diminishing.
I have NOT yet used the "Chemi CLean" red slime remover. May do so this weekend or not. Still want to see if I can in fact get rid of it without chemicals.
Couple of should read:
http://en.wikipedia.org/wiki/Cyanobacteria
http://www.manhattanreefs.com/forum/reefs-beginners/46961-cyanobacteria-primer.html
We can beat this!!!!