Which Cal/Mag Supplement for RO Water?

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Auburn1985

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I grow in Super Soil. And I want to use RO water.

I assume I'll need to add a Cal/Mag supplement. But which one, how much, and how often?

Thanks.
 
I use Botanicare Cal-Mag Plus (NPK Ratio 2-0-0)....
 
if u have right ingrediants in your super soil, you wont need calmag.
teas will be your friend here and you can do what ever your girl needs.
but theres tonnes of soil guys here that will help a lot more than I will
 
Auburn1985 said:
How do you tell when you need to add it?
Click to expand...

If you start seeing deficiencies that look like you need it. I don't grow in Super Soil but in my soil I don't think it could hurt even if it were not needed. jmo
 
Do you just want to use RO water, or is your tap really that bad?

RO water is not the best thing for organics since it is pretty much dead. So unless you must use it, you're way better off with plain old tap.

A bit more dolomite should take care of the cal mag issues. But like Hampster said, the bottled stuff shouldn't hurt even if not needed.

Wet
 
Wetdog said:
Do you just want to use RO water, or is your tap really that bad?

RO water is not the best thing for organics since it is pretty much dead. So unless you must use it, you're way better off with plain old tap.

A bit more dolomite should take care of the cal mag issues. But like Hampster said, the bottled stuff shouldn't hurt even if not needed.

Wet
Click to expand...

I was just afraid of chlorine issues. Other than that, I would LOVE to use just my tap water. I suspect the overall quality of my tap water is good. I was just afraid of chlorine.
 
Those drops for aquarium use work just fine and trust me, tropical fish are way more sensitive than any plant.

Adding a bit of organic matter to the water also works, the chlorine/chloramine reacts with it and gets neutralized.

My city uses chloramine, but I've never noticed any ill effects in the 5+ years I've lived here. The water report has it at less than 4PPM.

I only de chlorinate when I'm making teas, or microbes, or soluble mycos. Things of that nature. For regular watering, it's right out of the hose.

Get a water report online from your water system. Just google *your city*+water system and see just what you have.

Wet
 
Wet... I use R/O water for my indoor girls while feeding the soil. I do not like the fluoride in the city water for the girls. They really shine using R/O water with Cal/Mg added every time. I use 1ml per gallon.
 
If needed and working well, it's a good thing

What I was yapping about is people going to the expense and bother because of reading on the internet that's it's a 'must have' to grow. Like CO2 set ups when a decent exhaust fan would supply all that's needed.

I also might have been thinking of distilled with the 'dead water' comment. I do know you're not even supposed to drink that stuff on a regular basis.

Old timers strikes again.

Wet
 
Yeah ..is not a must have but is nice.

Same for CO2.

And you are correct they say not to drink R/O and/or distilled water all the time.
 
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