Cal-Mag ?

chemphlegm said:

I used calmag (1/2 strength) once this year in half a dozen plants, because someone here said my plants needed it. all six plants failed and did not finish properly while their twins flourished without the addition. I guess my plants didnt need cal mag after all.
I'll give you my bottle if you're in MI

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Ghost of Davy Jones said:

Sorry for your loss. Thanks for the warning. sounds like i should wait.

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chemphlegm said:

thank you, it was negligible though half dozen others were harvested a few days later. no dry spells here for many years.
I'd say feed when your plant needs it rather than when you want to.
there are full service feeding options too, the best option imo, feed organically, skip the bullshit forum additives.

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Ghost of Davy Jones said:

Yeah I ordered some fox farm neuts because thats what everybody seems to talk about.

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chemphlegm said:

I used calmag (1/2 strength) once this year in half a dozen plants, because someone here said my plants needed it. all six plants failed and did not finish properly while their twins flourished without the addition. I guess my plants didnt need cal mag after all.
I'll give you my bottle if you're in MI

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Ghost of Davy Jones said:

When should i add cal-Mag to plants? I Heard some plants need it around week 4. Is it best to wait and see if it shows signs of problems or should I add it as a preventative measure?

Any thoughts?

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whitebb2727 said:

I doubt a dose half strength harmed your ants like that.

If anything it should have helped. Mag helps with the uptake of N.


I generally don't worry about it unless the plant shows signs of needing it especially in soil.

The exception would be if using distilled or ro water as they are void of minerals.

Do you suspect your plants need some cal mag?


When I do use it I use it at 1/4 strength.

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whitebb2727 said:

I doubt a dose half strength harmed your ants like that.

If anything it should have helped. Mag helps with the uptake of N.


I generally don't worry about it unless the plant shows signs of needing it especially in soil.

The exception would be if using distilled or ro water as they are void of minerals.

Do you suspect your plants need some cal mag?


When I do use it I use it at 1/4 strength.

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chemphlegm said:

I used calmag (1/2 strength) once this year in half a dozen plants, because someone here said my plants needed it. all six plants failed and did not finish properly while their twins flourished without the addition. I guess my plants didnt need cal mag after all.
I'll give you my bottle if you're in MI

Click to expand...

Ghost of Davy Jones said:

When should i add cal-Mag to plants? I Heard some plants need it around week 4. Is it best to wait and see if it shows signs of problems or should I add it as a preventative measure?

Any thoughts?

Click to expand...

budman111 said:

That sounds like dodgy calmag!

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Flagg420 said:

I run RO water, so I add cal-mag, starting whenever the roots start to look legit... plant size I dont care about, age I dont care about, but root mass.... thats the decider.

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chemphlegm said:

I dont doubt it one bit. I never used calmag in ten years. I have spring water, my ferts have calcium and my soil is well fed.
I run the same side by side full time. I chose six of 12 of the same copies to add cal mag to, they all stalled, all lost their nose and acted just like I overfed/burned them. they stayed alive never really finished like their copies did , right next to them. I scrapped all six, it was certainly the addition of calmag causing the issue. I've since cycled the more of the same with perfect results, as I always have, before cal mag -fuck cal mag. It wont help shit unless the plant was not being fed properly in the first place. too much of anything is not good. perhaps I grow in a sweet spot, found my max and tipped the hat? I dunno

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Dr. Who said:

In soil? Don't "need" Ca/Mg. And use RO? Still don't "need".....(If the soil was built properly)

In Coco? NEED a Ca/Mg!
in hydro, any style and use RO = NEED a Ca/Mg!

Some Ca is based in Ca Nitrate. Adds more N and doesn't "buffer" well. Plant availability is great.
Some Ca is based in Ca Carbonate. Buffers very well, has good plant availability. Best choice for hydro applications.

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chemphlegm said:

makes sense w ro water. I have well water with plenty of calcium, fertilizer with added calcium too. adding even more upset my system

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Flagg420 said:

Yea @ 250-300ppm base from the tap, and no chlorine, ur water is prolly better than what I cobble together with my store bought solutions, lol.

I'd rock that water with some compost and bird/bat poo, and try to roll a full on organic run.... just cuz......

I got that shitty city water

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Dr. Who said:

In soil? Don't "need" Ca/Mg. And use RO? Still don't "need".....(If the soil was built properly)

In Coco? NEED a Ca/Mg!
in hydro, any style and use RO = NEED a Ca/Mg!

Some Ca is based in Ca Nitrate. Adds more N and doesn't "buffer" well. Plant availability is great.
Some Ca is based in Ca Carbonate. Buffers very well, has good plant availability. Best choice for hydro applications.

Click to expand...