Hypocalcemia symptom guide. The most misdiagnosed, most common, most limiting problem in Cannabis

[MonasticDank]

Any Thoughts on watered down milk as a readily available source of calcium? Like for a quick fix not as an everyday watering.

[ReikoX]

@shag

This is from aspen, she is on ICmag and some other forums too.

I’m 90% sure she got that from DansBuds (RIP).

@HolyAngel

Using gypsum water like that will flush the pot by itself.

Specifically it’s pushing off the other cations and replacing them with Ca++.

@MonasticDank

Any Thoughts on watered down milk as a readily available source of calcium?

Slownickle often suggested powdered milk. He suggests mixing up the powdered milk according to the directions and then diluting that 1:1.

[MonasticDank]

@ReikoX

Slownickle often suggested powdered milk. He suggests mixing up the powdered milk according to the directions and then diluting that 1:1.

I may need to try that

[kevinmalone]

Hi!

So what’s the elemental level of Ca that should be ideally fed?

And if Gypsum has solubility issues, why isn’t Calcium Acetate used?
It’s readily soluble in water at 347 grams/litre.

1g/l of Calcium Acetate should provide around 250 ppm of calcium. (Molecular weight = 158, Ca% ~25)

Please let me know what you guys think

[HolyAngel]

Calcium needs to be in a ratio with potassium and magnesium. I’m unsure on exact rates, when, but 4-1-2 K-Mg-Ca seems to be standard. Something like 150 K 50 mag 100 ca but I’ve ran up to 3-1-3 in coco for prolonged periods without issue. Just gonna depend on your plants.

I hadn’t seen the calcium acetate but that seems generally hard to get here in the States, or not any cheaper? unless I’m missing something

[kevinmalone]

@HolyAngel

I hadn’t seen the calcium acetate but that seems generally hard to get here in the States, or not any cheaper? unless I’m missing something

Ohh! Wonder why that is though. Here’s a link you can check.

Calcium Acetate Powder, Lab Grade

[HolyAngel]

Oh nice! But 30g of calcium acetate for $21 is 16x+ more expensive than the already expensive downtoearth solution grade gypsum which is 454g for ~$15. Looks like the calcium acetate should work just fine tho if that’s what you wanna do.

[kevinmalone]

True!

It doesn’t make sense cost wise, I did not realise it was so expensive there, but I don’t have access to solution grade gypsum so thought of asking if this could work, I have also updated the Ca Values 1g/litre would provide.

[HorseBadorites]

Eggshells and vinegar make Ca Acetate. However you mix them, just do it veeery slowly

[breadwinner]

I use crushed oyster shells and egg shells. Best move I’ve made in quite some time

[hawkman]

very interesting article - it comes down to PROPER use of nutrients - when to / how much to / how offen to , ect to

[lefthandseeds]

In other plants, calcium uptake is linked to consistent watering. It is common for tomatoes and peppers to experience blossom end rot (calcium deficiency) with inconsistent watering. I suspect cannabis is probably the same in this regard.

I think chemically, calcium cations might get bound up with phosphates when things go dry. But I’m not complete sure if it’s the cause. You can see it precipitate as white stuff if you use hydroton.

@HolyAngel

Calcium needs to be in a ratio with potassium and magnesium. I’m unsure on exact rates, when, but 4-1-2 K-Mg-Ca seems to be standard. Something like 150 K 50 mag 100 ca but I’ve ran up to 3-1-3 in coco for prolonged periods without issue.

For salts, that’s about the range I would recommend. Closer to equal ppm of Ca and K in veg, maybe 30-50% more K than Ca in early flower through stretch and about twice as much K as Ca in bloom.