Quote Originally Posted by greg1317
your right he sort of said that but he was hardly clear on the fact that you could actually use RO water and didnt explain why it would be better to use RO water. If anything i just cleared up why you would want to use RO water.
Quite right!
There's a lot to be said for starting with a "clean slate".
Always best to minimize the unknown.

Coco nutes, if they are any good, create a perfect balance with distilled or R/O water.
And the ppm. actually means something when you start with 0.
Excellent points for coco and hydro!

I have found however, that low ppm water kills cuttings by drawing mobile nutrients from them through osmotic pressure.
You might want to look into that.

Aloha,
Weeze
Weezard Reviewed by Weezard on . Reverse Osmosis can cause issues I am learning over the last 2 years that RO water is not a good idea for our plants. RO is so efficient that it removes good nutrients like calcium, magnesium, iron, potassium, zinc, and many others. Plants become micronutrient defficient. I now feel that if a person uses RO water they need to replace ALL micronutrients. And because mixes and ferts expect those micronutrients to be present in the water supply, the plants can show many different forms of stress, the most prevelent one Rating: 5