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![]() I wish I would know why, maybe it's too porous? but all my totoka is totally free of coraline. It grows on my glass and I scrap it off. I think it looks dirty so I do not allow it to grow there, but it simply won't grow on any of my Totoka liverock. YOu might want to check out this rock if you don't like coraline and it's very very porous and the pores are deep so I don't have any nitrates because it's doing good denitrification as well.
I do have other type of liverock covered with coraline, so that's wierd. Quote:
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