I have a few Qs about RO water.

[gainesvillegreen]

Just be sure to add in CalMag+ or the like if you are going to use RO water. RO water takes everything out of the water. Even the secondary elements your plant will need. The CalMag will add those back in there.

I'm glad you added this, because I was too hiiiiiiiiigh and forgot :smokebong: