• Cement in the sea.

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Has anyone tried binding dry reef rocks (D.R.R.) with cement mortar? I'm interested in practical experience; I know the theory. By the way, the opinion about the harmfulness of cement for aquariums is greatly exaggerated, at least for freshwater; I've used quite a lot of it.

Ricky9405

As often happens, I answer myself. Although the article is interesting, it may be useful to someone.

Stefanie9771

I plan to connect the existing pieces of S.R.C. (dry reef rocks) with white cement. Are there any updates in this area?

Daniel8015

Recently, I tried to mold S.R.K. (dry reef rocks) from coral rubble, Portland cement, and coarse salt. I soaked it for a week in a toilet tank. The pH hasn't jumped, and salinity is slightly increasing. Today, I placed a small rock in the display. Let's see.

Stephen5857

I found cement in 50kg bags. I bought it in bulk for about 5 per kilo. Turkish. Bath salt without additives. I walked around pharmacies and found the largest one, like peas. My proportions (weight, not volume!): 3 (three) parts coral crumb 1.5-2 parts cement 0.5 water (osmosis, TDS 0-1) 2 parts salt It is important to mix the cement, water, and crumb thoroughly. However, once you add the salt, you don't need to mix it too much—let it wash out as much as possible.