Does anyone know how long it takes for the coraline algae (purple) to grow back? My Fiji live rock has been fully cured, but I started to notice some of the coraline algae started to turn white. When I was curing my live rock I forgot that the water I was using had no calcium in it, so I have been adding Kent Marine's Liquid Calcum, and Tech-M, for about a week. I'm keeping the Ca levels at 450ppm, and running my 50/50 light for 12 hrs on and 12 hrs off. Any help would be great!!!
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