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Hi @DeepWaterCulture, heck yeah. The last time I edited it was in April 9, 2021, but that doesn't tell the whole story. It was edited and refined many times prior to that date. This recipe has been verified by many people as well. I don't use dolomite for the very reason that it doesn't dissolve very well. At least not to make consistent recipe. The other factor that makes it a bad source of minerals is that the ration of Ca to Mg to CO3 is not controllable. The key point of our DIY recipe is to get the ratio of Ca to Mg as close to 4:1 as possible. Inconsistent amounts of Ca and Mg will cause variations in pH, GH. With added carbonates in Dolomite, KH will also be added causing increase variation in pH. No. Not in my shrimp tanks. I used to run CO2 in my planted Apisto tanks, but when it ran out, I found my plants did alright without CO2. Liquid CaCO3 is difficult to find is it not? It doesn't dissolve well in water.