[sharkdude]

Great succinct article Greg.

I like that you included a list of coralline predators, you can add those little starfish (forget species but they are in hitchikers archive). I have watched several graze an area of coralline, leaving behind pale areas (slightly faster than watching grass grow).

I also have had a recent growth explosion of halimeda calcareous green macro algae. I am convinced that this rapidly depressed the calcium in solution and thus affected coralline growth.

I too am now using the Kent buffer and seachem calcium in an attempt to get things back to correct levels.

Some have suggested that coralline grows better with more actinic light. Any thoughts on this other than different species hypothesis?

sharkdude