Reverse osmosis water and cal/mag deficiency???

Hey all, my 2nd post ever! I am using R.O. water and am using a 3 part nutrient formula with micro. Should I have concerns with a cal/mag deficiency? Or is using micro enough to keep my levels up. I have another thread going where I get problems after a few weeks of flowering and it seems that a lot of folks are of the concensus that it may be a manganese overdose, or a deficiency in cal/mag.

So, even though I am using micro in my R.O. water, should I or could I use more cal/mag specifically? And should I add more micro to get the levels up or should I get a bottle of cal/mag specifically...

And while Im thinking about it. I was told I could add hydrogen peroxide to my res to kill bacteria. Is this regular ole drugstore peroxide? And how much should I use? As in ml per gallon?

no its from chemical shops ,its 35% grade or 50% and you can get it in bulk. There should be enough cal/mg in your nutes.

You can raise Mag. level with Epsom salts, not sure about calcium, but bone meal might work. Just be careful and not overdo it.

Dont Fear The Reefer said:

You can raise Mag. level with Epsom salts, not sure about calcium, but bone meal might work. Just be careful and not overdo it.

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Bonemeal is organic and as such needs bacteria to break it down into inorganic compounds for the plant to use. H2o2 would kill the bacteria that convert it.



J

I use RO water and add 1 cap full of "Cal-Mag Plus" to each gallon, unsure if its needed, but I have never had a cal or mag issue

Stlmatt

So don;t use the Hyd. Peroxide... It will kill the bacteria in your soil which is required for growth.