exactly u just have to remember u are going to have to supplement RO water with a calmag or a magical or something along those lines... every nute company has there own version of it but your plants will be deficent of calcium and magnesium if you do not use the supplement when using RO water...fo sho.
sounds to me like this: there are benefits and negatives to either using RO or something like spring water.
but, you shouldnt be depending on your water to provide the only source of minerals and such anyhow... so, it seems generally if you are doing things right anyways, RO would be best tho.
so thx for the info.