hey hotrod..nobody said we drink it..lol actually used to as a kid..man i had strong bones. should have broken many but didnt. well is 400+ deep. stuff makes horrible coffee, been getting that spring water for 35 years. use that for everything except shower n laundry. No i dont use enzymes for sediment, use good water for hydro but i do get a good deal of organic looking junk in nft. and dwc, . last runs have been in soil. never used hard stuff in hydro but dangit im gonna try it out. I actually called GH and asked about the compatibility of HW floramicro. was told my water to hard to use for anything. You guys that have wells that murder..mine doesn't. that's what got me thinking,,grandma watered her aloe n poinsettias with it and all her houseplants did more than ok so after hauling literally over 10 thousand gallons of supposedly good spring water over the decades i gave it a whirl. results are confounding and amazing. wayyyy less stretch, 2-3x fatter at end of just 3wks, solid 10" shorter. Consumtion of prior test subject seems unaffected and even preferred. Always suspected nute companies werent 100% forthcoming in their goings on. idk if this proves anything at all but to me it proves 2 things. one ya don't need RO or filtered h2o, two I've been doing it wrong or following the wrong directions. I used to use GH Pro 10part medium feed minus the kleen and rapid start with 1ml calmagic instead of 2 however after experiment #1 results i switched to full strength calmag to see what happened. figured it was a fluke in round one but surely not twice in a row. fruits are fatter plants are shorter. Now I'm wondering what I'm doing wrong with nutes? when they claim more calmag under LED are they saying double or triple the recipe? Its gotts to be the extremly high calcium, magnesium, or iron in the hard water. But the real question is why isnt the full GH line in good water keeping up or exceeding? I alternated GH with masterblend a while back, I did not notice the excessive height back then. not saying it wasnt there just i didnt catch it, probably because i wasnt looking or doing a side x side. time for a water vs water, nute vs nute side x side and a hardwater hydro attempt. Any good input on the phenomena is welcome.