Epsom salt softens the water more then anything else and RO water is prety soft in the first place. Epsom salt keeps the roots white and does aid in leaching the roots as well.
Zandor Reviewed by Zandor on . Hey Zandor....about epsom salts (magnesium) Would tou recomend I add a little epsom salt to my rez? A lot of people use it and some say that GH series lacks it a bit. I assume your Calmag you use is like epsom salt with calcium too. You use GH right? Flora series?. Maybe I should try that too. Rating: 5