ppm?

Hi there. I hope someone can help me out. I have some white widows vegging. i am using ionic grow. the label says to use at 2.8ec which is 1960 ppm at .7 conversion. that seems awfully high to me. i emailed the folks at ionic and he assured me that i should just follow the instructions. they are vegging under 320 watts of fluorescent tubes. anyone else using ionic or growing white widow? if so, what will they tolerate as far as nutrient strength? btw i am using ro water.

I grow Flying Dutchman WW and I can tell you, she will burn up at the drop of a hat!!!

I would use it 1/2 or even 1/4 strength of what you are using on your other plants and see how she likes it.

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