<a href=showthread.php?s=&postid=14485225#post14485225 target=_blank>Originally posted</a> by sanababit
RBU1, killing the lights for 3 days will kill cyano, on the fourth just run the actinics and on the fifth your regular light cycle, lights out will not kill or harm corals, why you asked, because i have done it before, during the 3 days i skim very wet and make a water change because when cyano dies it releases a lot of nutrients back into the water.....i have done it 3 times in about 2 years in the hobby, last time i had cyano was about 8-9 months ago and tried another aproach, i got some redslime remover and it went away in 24 hrs never to come back, if you try it just follow instructions and you will do fine....so options are
1.- 3 days without light, skim wet, change some water
2.- use chemiclean, 24 hrs cyano gone, follow instrutions
3.- lower phosphate, nitrate, so cyano dies
4.- manual removal
what ever you do good luck
sana