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Old 01-03-2019, 09:24 AM #1
Rabbi
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Can Not Shake This Calcium Deficiency/Lockout For The Life Of Me!! Why???

So about a little over a year ago I moved to a new place and I have been battling this Calcium issue every since moving here. Here's some info:

- Growing with Aeroponics in 5gal buckets(for almost 18 years now).
- First I was using Jack's Hydo and Cal/Nit but switched to AN 3 part(jungle juice) when the Jacks wasn't working out, since I'm more familiar with it.
- About 800ppm in flower of the M-G-B before any extra cal/mag added(but have gone as high as 1200ppm while trying to hammer things out).
- I am using r/o water(ppm 0)
- Water temps around 20-22c.
- Ph in the 6.5 - 5.5 range.
- Air temps 75-80f with lights on, 72-75f lights off.
- Co2 1500ppm lights on of course.
- 1000watt hps

I've tried adding all different kind of levels of extra cal/mag. At first none because AN says you don't need any with their products since they have enough in them.

Then I tried the recommended 150-200ppm of cal/mag. Then I tried 300ppm. Then I tried 400ppm, then 500 and then ridiculously crazy high amounts that I knew obviously wouldn't work but just to see what would happen, since shit wasn't working anyway.

Even on the super high amounts it never ever looked like excess issues, it always looked deficient all the time(lock out I assume?). And I'm talking super deficient too. Also no salt build up, clean rez's. No bugs. Even tried a different water source(city tap). I tried all these different levels for couple months at a time, just to make sure I wasn't jumping the gun too soon.

I'm literally at a loss right now. Running out of things to try. Just wasting my time, effort, money and resources. Any of you guru's out there have any idea what might be going on here? Been doing this along time, shit's just not suppose to be this fuckin hard lol.
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Old 01-03-2019, 05:53 PM #2
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phantom deficiencies! U maybe experiencing some type of fusarium or other fungal infection. similar problems plagued me for years. till i found out i was recirculating my problems.

i think 80-220ppm of calcium is recommended. then half of that number should be matched with magnesium in a 2:1 ratio. if i remember correct. u could try a foliar of calcium if your certain its calcium. biominn ca is a great product to foliar

seems like you have the other things in check. other then the 1500ppm of co2. go with 1000ppm till u get things figured out. i remember reading that after 1500ppm plants can close up the stomata an go into stasis. if i had to say im willing to bet some genetics may slow at 1400ppm, an others at 1600ppm co2, so why guess. tbh i dont think i see any difference at 1000ppm or 1250ppm. but then again getting to the last final % of dialing in there are 1000 other variables of importance. dial down to 1000ppm so u know your not slowing anyone, thats still almost 3x atmospheric co2.

its funny u mention jacks. i thought jacks was the problem for me cause i had other nutrients perform better under same conditions. read up on fusarium. try bleach or pool shock in the water. another disinfectant is hydrogen peroxide.

just because roots aren't roted doesn't mean u dont have a fungal infection. infections can disrupt the uptake of nutrients inside the stem. one genetic could fight it off more then the other making the plant seem healthier. infections can partially paralyze the plant. i could go on an on....
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Old 01-03-2019, 05:58 PM #3
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Solid advice gman 👊
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Old 01-03-2019, 06:02 PM #4
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Solid advice gman 👊
oh man, what a ride its been. i almost lost everything. was about to shut down.... bwell man
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Old 01-03-2019, 09:20 PM #5
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You mentioned you moved, do you use r/o water or are you on a new water supply? What's the analysis, ppm, pH? What's in it?
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Old 01-03-2019, 10:30 PM #6
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phantom deficiencies! U maybe experiencing some type of fusarium or other fungal infection. similar problems plagued me for years. till i found out i was recirculating my problems.

i think 80-220ppm of calcium is recommended. then half of that number should be matched with magnesium in a 2:1 ratio. if i remember correct. u could try a foliar of calcium if your certain its calcium. biominn ca is a great product to foliar

seems like you have the other things in check. other then the 1500ppm of co2. go with 1000ppm till u get things figured out. i remember reading that after 1500ppm plants can close up the stomata an go into stasis. if i had to say im willing to bet some genetics may slow at 1400ppm, an others at 1600ppm co2, so why guess. tbh i dont think i see any difference at 1000ppm or 1250ppm. but then again getting to the last final % of dialing in there are 1000 other variables of importance. dial down to 1000ppm so u know your not slowing anyone, thats still almost 3x atmospheric co2.

its funny u mention jacks. i thought jacks was the problem for me cause i had other nutrients perform better under same conditions. read up on fusarium. try bleach or pool shock in the water. another disinfectant is hydrogen peroxide.

just because roots aren't roted doesn't mean u dont have a fungal infection. infections can disrupt the uptake of nutrients inside the stem. one genetic could fight it off more then the other making the plant seem healthier. infections can partially paralyze the plant. i could go on an on....
Alright, thx for the advice man!

Think I'll just unplug the co2 generator completely for a while and see what happens.

New set up is in a shop this time(old set up in a basement) and the co2 generator is located across the room from the co2 meter/controller, with the plants in the middle. It could very well be possible that their's more than 1500ppm of co2 in the actual plant area. In fact I'd almost bet on it.

That is certainly one thing that has not occurred to me until you mentioning it. it's been a huge mystery for me since it appeared that everything was so dialed in and I tried so many different things.

On top of that this is a strain I've grown for years and very familiar with, so the mystery problem has been blowing my mind. However I did grow other strains as well just to make sure it wasn't just the strain somehow and they all struggled with what appears to look like calcium deficient.

I do have some hydrogen peroxide sitting around as well that I haven't been using. I will now.

Thank you very much for your advice. That actually makes sense to me. Really doesn't seem like I left many stones unturned but that could certainly be one.
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Old 01-03-2019, 10:39 PM #7
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You mentioned you moved, do you use r/o water or are you on a new water supply? What's the analysis, ppm, pH? What's in it?
I did move but I use r/o water now and it comes through at a pure 0ppm. Yes it is a different water supply but at one time I even started hauling out my old supply that I was using before but ended up with same results(as the r/o water out here). A real head scratcher it was since that old water worked fine for me before. But gmans theory sounds totally solid to me. Gonna give it a try.
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Old 01-04-2019, 01:28 AM #8
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We really need a photo. Even with things in front of you, it's still possible to get it wrong. As I'm sure you appreciate

PPM is very scientific, but almost non of us measure it. We have CF meters. PPM can be calculated from CF, but there are two ways of doing it, that give entirely different results. I have the famed CF Truncheon, and it actually gives two different PPM readings on the one meter. 900ppm could be cf11 or cf16 if I work backwards from your figure.
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Old 01-04-2019, 01:38 AM #9
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Have you tried turning the plants off and then back on again? Sometimes you gotta reboot them plants
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Old 01-04-2019, 01:56 AM #10
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seems like you have the other things in check. other then the 1500ppm of co2. go with 1000ppm till u get things figured out. i remember reading that after 1500ppm plants can close up the stomata an go into stasis. if i had to say im willing to bet some genetics may slow at 1400ppm, an others at 1600ppm co2, so why guess. tbh i dont think i see any difference at 1000ppm or 1250ppm. but then again getting to the last final % of dialing in there are 1000 other variables of importance. dial down to 1000ppm so u know your not slowing anyone, thats still almost 3x atmospheric co2.
I also read an article on CO2 saying PPM of nutrients should match CO2. Based on that if you're running 1500ppm CO2 then you should raise feed accordingly.

But as stated above 1000ppm CO2 is plenty. Every time I have gone higher I ended up with deficiencies. Mostly potassium for me.
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