OK so I have a cyano problem in my 220 reef. i have tried to kill it once before with red slime algae remover. it worked once before but now the infestation that i have will live through the whole dose of the remover so i tried a double dose meaning i dosed the tank again 48 hours later. now the cyano did loose a lil color and sparted pealing off the rock a lil so im going to try to vaccuum it out. but either way i used two whole boxes of the remover and it wont kill it like it used to. now ive never tried the chemiclean version of the remover and i figure since its a different company and product maybe it will work better, but ive read posts with it causing problems in multiple peoples tanks with their corals and thats the last thing i want to do. so what do you all think i should do? try the chemiclean? and only give me advise if you have yourself used the products im talking about thankx in advance