using R/O water

ozric420

New Member
Hello my friends ,I would like to know if anybody is using R/O water for their hydro grows and if you are ,are you adding anything extra to compensate for the 0 ppm ,I hear that you have to add CalMag plus. I use advance nutes and I just started using R/O water. thanks
 
thanks for the info ,is the calmag a powder ?
 
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