Natural CalMag in well water

Discussion in 'First Time Marijuana Growers' started by Justenoughforme, Jan 17, 2016.

  1. Limestone is calcium carbonate, so I'm not really sure what you mean there. However, if it's drinkable and below 250ppm it will be perfectly fine, as yours is a bit higher than this I would recommend using some RO or distilled water in with your water at a ratio of 50:50 for seedlings, but older plants should be fine with your water as it is. Be sure to buy hard water nutrients though
     

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