whats your go to calcium source?

I my self am a organic dude, I use a lot of calcium carbonate from oyster shell powder and bone meal. I love the slow release phosphorus I get from the bonemeal. these powdered calcium sources sure do help in keeping my plants ph stable as well.

when the plants are “ teenagers “ before the flip, ill hit them with gypsum, for some additional calcium and sulfate. not to mention the sulfur will boost terps for the flowering stage.

beginning of flower, and even probably most of flowering I believe calcium is still needed for the cell wall production. most of the energy if happening above ground now and calcium is a major player in fruits/flowers forming.

Anyways I tend to stick with the slow release calcium products and achieve great results…

anyone else have a rant on on C? and there regiments

A half half mix of oyster shell flour and crustacean meal in my initial soil mix.
If needed, langbenite topdressed for a quick fix has always done me well.

Gypsum is great too!

gypsom every time, but theres powdered egg shells in the compost heap, baked the egg shells, broken up, in to the bottom of the oven and baked. whizzed up in an old herb grinder to a nice fine powder and added to the pots too.
if i need a quick fix, ill nutralize the powdered egg shells with nitric acid.

go go kid said:

gypsom every time, but theres powdered egg shells in the compost heap, baked the egg shells, broken up, in to the bottom of the oven and baked. whizzed up in an old herb grinder to a nice fine powder and added to the pots too.
if i need a quick fix, ill nutralize the powdered egg shells with nitric acid.

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thats awesome I have done that as well, lol, we would get along.

Gypsum, made up of 21% calcium and 17% sulfate, is one of the best sources of calcium for every plant in your garden.
so the gypsum alone is pretty hefty

Gypsum and calcium carbonate. I also have calcium bentonite on hand

T macc said:

Gypsum and calcium carbonate. I also have calcium bentonite on hand

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bentonite, is that the same stuff you can use to repair holes in pond lineings? it expands and fills the hole

I mix 1tbsp of dolomite lime per gallon of peat and used a balanced one part fertilizer with tap water that has some trace mineral content. It works for me.

Greengrouch said:

I mix 1tbsp of dolomite lime per gallon of peat and used a balanced one part fertilizer with tap water that has some trace mineral content. It works for me.

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yeah i do like a rinse treatment to my new coco before i start growing with a trace elements powder and seaweed flush then a second week 3 or 4

chickenpoop said:

I my self am a organic dude, I use a lot of calcium carbonate from oyster shell powder and bone meal. I love the slow release phosphorus I get from the bonemeal. these powdered calcium sources sure do help in keeping my plants ph stable as well.

when the plants are “ teenagers “ before the flip, ill hit them with gypsum, for some additional calcium and sulfate. not to mention the sulfur will boost terps for the flowering stage.

beginning of flower, and even probably most of flowering I believe calcium is still needed for the cell wall production. most of the energy if happening above ground now and calcium is a major player in fruits/flowers forming.

Anyways I tend to stick with the slow release calcium products and achieve great results…

anyone else have a rant on on C? and there regiments

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I add gypsum and D-lime every so often during soil recycles but for me the real game changer was composted eggshells. Crushed oyster shell is a great ph buffer in addition to a source of P and C. Super slow release. I use stark water collected from a dehumidifier as my main source which has a ppm of 13 so I need to augment with minerals. Long time ago when I started out in living soil I had to use an organic cal-mag or end up with rusty spots late in flower.
Not anymore; now there’s like a million zillion tiny bits of eggshell slowly decomposing in my mix. The red wiggler worms do most of the work; I just lay back & smoke blunts.. The eggshells can take frikkin forever to break down but they also provide a full range of macros. They can be full of pathogens if used raw so I just nuke them for a minute after making an omelet or a soufflé or whatever and then toss them in my worm factory. Worms are smart…they lay eggs inside the eggshells to protect them against who knows what; the cycle of life continues.

go go kid said:

bentonite, is that the same stuff you can use to repair holes in pond lineings? it expands and fills the hole

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Probably. I initially bought it as a detox, forgot I had it for a couple years, and now I use it sparingly on plants. Usually for compost teas. It does turn your soil to brick tho if you add too much. High water retention. If I were to do a coco run, I'd probably mix this in for the CEC.