Let see If I got this right... If you turn your skimmer down, or turn it of (how often?) it will help your coraline growth? Cause I am trying to get some pinks', but no luck. I got some purple in the rocks, and I got some green, white chips on the glass but thats about it!!! If I was to find pink coraline chips, and put them in my tank will they spread, will they actually survive???