hey all I was told to use distilled water in humidifier? It’s getting expensive I assume I can use RO water in humidifier for it won’t give white powdery mineral build up ? Is this correct ? And also If I start using RO water in my actual feed what will I have to add extra ? I heard calmag But is that the only extra bottle I have to grab if going from tap to RO ? Cuz it’s have leaf spots that look like rust spots and they look like calcium def or tap water issues but they usual only happen on a feeble plant and at lower part of plant and I heard calcium is upper ? Also there is a RO filter or and RODI filter which do I go with ?
Thanks all. Thanks me grow it
atach pic of rust spots