You'll want the soft water version once you start using RO water. Your plants will LOVE YOU!Only wanting the best for my little girls(and me!), I just ordered a R.O. filter too. My question is, will the hard water micro be suitable still or will I need to buy the soft water version?
I would order a bottle of FloraNovaBloom instead of picking up the regular micro. It may seem like a waste but you'll be glad you did.