Beachwalker
Well-Known Member
-thanks
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Is calcium carbonate more easily assimilated by cannabis than calcium nitrate?
- Thread starter Beachwalker
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- cal calcium deficiency mag magnesium
-thanks
churchhaze
Well-Known Member
No.
Capn-Crunch
Well-Known Member
Nope
Dr. Who
Well-Known Member
While the plant takes each at differing rates.
Ca Carbonate is a better buffer of pH then the Ca Nitrate.
This is important when building soils or in the use of RO water...
Plants grown using Ca Carbonate do just fine vs, Ca Nitrate.
Besides, Carbonate does not up the N as much......I find that, important!
Ca Carbonate is a better buffer of pH then the Ca Nitrate.
This is important when building soils or in the use of RO water...
Plants grown using Ca Carbonate do just fine vs, Ca Nitrate.
Besides, Carbonate does not up the N as much......I find that, important!
Beachwalker
Well-Known Member
Thanks for your input, the reason I asked this question is I've noticed a lot more issues in ffof since I switched to the the calcium nitrate, I'm needing to use a lot more of it too
Dr. Who
Well-Known Member
That exactly makes 100% sense to me!
I always amend FF soils with Dolomite lime. The reason is it's Ca carbonate based for the pH and has a pretty high available Mg level.
I have found over the years, that FF soils tend to run low on buffering ability and available Mg later in the run...
I generally add it at a good heaping handful per bag......so around a half cup +... rounded half cup if you like ( I just stick my hand in the bag of dolo and sprinkle it out over the FF soil in a kiddie pool and mix it in...)
Soil building is still done in a cement mixer.
Beachwalker
Well-Known Member
Yep just ordered & going to start putting dolomite in the mix and cut down or eliminate the liquid cal-mag all together if possible, though I never had this issue with the GH Cali Magic. Thanks again for the info
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RemoChemo
Member
I can’t scientifically say yes but, with certainty I can say my friend has no issues. His water is 300+ppm well water and never has to add cal/mag and I am have around 70ppm well water. I have to add cal/mag or I see deficiencies.
I hope that helps.
To me I would say the molecule size is absorbable by the plant.
Also, he uses only the basic 3 of FOX FARM nutrients in soil-less mix and I use JR Peters 5-12-26 and 15-0-0 in hydro
I get 5 lbs under 8- 315watt CMH lights and he uses 12- 600 watt HPS and he’s lucky to get 4 lbs.
he does have a 3 yr ongoing mite issue. Guy just doesn’t have luck and nothing he does ever gets rid of them. Sad cause I always want some clones of his but wouldn’t dare bring one home.
oldbeancounter
Well-Known Member
I have been using calcium carbonate and wondered how much per gallon or Liter you suggest I safely might continue to use in soil which is HP pro mix and mega crop version 2?
So far no problems I am mid flower some they seem ok was adding say teaspoon per 5 gallon water once a week for 6 plants I am trying it on vers bottled nutes like cal-mag(sooner spend money on seeds and make my own calcium/mag tp use top up/maintenance under LED high intensity lighting if and when needed.
.Also I use epsom salts tablespoon once or twice month during flower/veg.
I do PH all my water, nutes etc.
RO system comes next hopefully, for now town water it is.
Dr. Who
Well-Known Member
What is the packaged concentration % of the CaCarb?
Your sure not going to hurt anything at 1 tsp per 5 gallons.....
You kinda want to shoot for making a Ca solution at 5% and adding 5 ml per gallon...
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Beachwalker
Well-Known Member
Are you familiar with this product? I'd like to mix it in my ffof soil then add Epsom salt to my feed and eliminate bottled cal-mag supplements. Or would gypsum be a better choice? I also use Dolomite lime as directed -thanks in advance for any info
https://www.amazon.com/Down-Earth-6-Pound-Oyster-Shell/dp/B001B2W8BA/ref=mp_s_a_1_3?keywords=Garden+calcium&qid=1553026592&s=gateway&sr=8-3
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rkymtnman
Well-Known Member
friends of ours give their chickens that stuff. makes the egg shells stronger. tons of Ca.
Dr. Who
Well-Known Member
From time to time here too.
Dr. Who
Well-Known Member
Good stuff to be sure. I use it and other Ca source's when building soil.....
For you, and in FFOF.......Simply add a nice heaping 1/2 - 3/4 cup Dolomite Lime to that whole bag of OF.....You see, OF is light on both Ca and Mg over time. This advise will fix that.
You might notice a change on how FFOF runs, from time to time.
This is due to them changing locations of the main source of the mining operations around the country. One soil source is never the same as the last, or the next. Generally it stays pretty close as they adjust what they add to be uniform. Once in a while they can be a little off on something......
I always added more lava stone or perlite. Which ever you prefer.
Beachwalker
Well-Known Member
Pretty much what I'm doing now so I'm going to stay on that path, thank you for the input!
oldbeancounter
Well-Known Member
Any idea how long it takes the shell to break down for the plants?
I may go that route as the calcium carbonate I have was just a large bottle of it for bone health etc so it isn't pure so I will go with something I know the contents of, this has other ingredients listed on my bottle of it so going to switch .
Any idea How much of the shell suggested to use say for a 5 gallon pot of promix ?