Anyone else have the "problem" of not getting any coralline algae growth?

[GreenSpottedPuffer]

I don't think its nutrient levels either though. Well I mean I don't think your going to get more coraline in a higher nutrient tank. My tank is always at 0 nitrates, 0 phosphates and I don't have a speck of nuisance algae but am getting a lot of coraline on the rocks. The only other algae in my tank is a ball of chaeto that doesn't really grow much.

I never got as much coraline until I started adding Kalk in my top off water (since kalk precipitates phosphates, that would explain 0 reading I always get). I think I agree that the corals/clams will out compete the coraline. I know before Kalk I was only using two part and would test the Ca every few days. I noticed that I would dose in the morning and get a Ca reading of around 400 and by the next day if I did not dose two part again, it would be mid 300's. And this is a tank with only frags. So the corals are using up a ridiculous amount of Ca each day. I think my clams are a big part of it too.

After dosing kalk though, the Ca never drops below 400 even when I forget or choose not to dose two part.

Just my observations...