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Originally Posted by bluehelix Hydrated lime should not be used. Calcium carbonate should be used to balance out peat moss. The only people using hydrated lime are hobbyists. If one intends to use hydrated lime, it must be used with a sensitive pH probe to monitor the casing since peat varies in pH a lot. |
I've used hydrated lime for almost every grow I've ever done, and with much success. I use it in my casing mixtures and for bulk substrate soaks. I've never had negative results from using it and I don't use a pH probe. I'm not dumping the lime directly on the casings, it always gets diluted during the pasteurization process. And yes, I am a hobbyist.