GARF's "Bullet Proof Reef" Anyone?

[soapy]

I have tried making aragocrete and one problem I ran into is that the rock is leaching a lot of silicates into the tank which drives diatom blooming. How long it will take to get rid of the silicates I do not know. I suspect that with different cement you could reduce that problem somewhat? Anyway I pulled that rock out once I figured out what was happening and am still soaking it, maybe in a few months the silicate leaching will calm down.

At Garf they just drive the tank straight through the diatom bloom and they are displaced by green algae. But I get the feeling that some cement releases more silicate than others..?

BTW, I just used aragonite sand and cement so the problem is not from a regular silica sand in the mix.