@Keffka is pretty nifty when it comes to science type horticultural things-including soil and especially gadgets...maybe he has some input?I’m starting to use RO water for the Sativas. My tap water has no chloride and is ph 7 but undoubtedly loaded with dissolved solids. I’m ordering all the gadgets so I know for sure. I need more control over the soil. They can’t handle it in flower. Hybrids could care less but I’m sure they’ll improve too.