Calcium

[Fitzera]

Forgive my ignorance but when using RO water is cal/mag supplementation needed? I have been using Organic Cal-Mag OAC Plant Nutrient Supplement by True at around 2ml a gallon because my brain told me to use calmag from having RO problems in past grows. Trying to get away from using the last of the bottled stuff and seeing what the normal customs are now. Thanks!

I would suggest start adding oyster shell/gypsum and sulpomag to your soil mix to supplement calcium and magnesium.
Bonemeal also contain calcium, greensand and rock dust contain magnesium.

I would continue adding calmag to your ro until you have supplemented your soil mix. Especially if you are using led.

 

[hyposomniac]

Ok thanks didn't know thought I'd ask. Never have used it before and fight a cal deficiency. Will gypsum make a tea?

Yes, Gypsum is soluble in water at around 2g/liter (2000ppm) but it takes a while to dissolve.

 

[h.h.]

Im going tooo fighting a cal deficiency the day before tonight!

The day before tonight is today.

 

[Rico Swazi]

maybe boogie is reliving ground hogs day! lol

wonder if leap day coming up will make people think its tomorrow when it isnt ,


nice pics of what lots of amendments can do from chunky
figured I'd show some to represent the less is more crowd

this is what I got out of an aged huglebed two years ago with intercropping and companion planting

zero amendments that year including liming agents

less is more applies to everything but the work involved to grow this way

which is why many don't go this route I reckon