This is in the amazing category. If you're on the fence make this an amazing product, I'm getting just over 5 gallons an hour. My plants love it, they looked more robust after 8 hours. I mixed my nuts at 5.9 ph, they were stable for 48 hours. My starting ppm is around 22 and 7.4 ph when I start I'm pretty sure 22ppm cal/mag is.
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