Jacks 321 yellowish leaves

canope

canope

Well-Known Member
waterproof808 said:
Idk, my plants are 5-6ft in #3 pots of promix and not having any deficiencies.
Also, are your drippers evenly watering your entire pots? Since you are feeding such a high EC, I’d make sure there aren’t any spots being missed by your dripper causing EC spikes. Have you looked at your roots?
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Yes I checked drippers and they doing fine. I'm checking my roots tomorrow, I'll upload a pic
 
calvin.m16

calvin.m16

Well-Known Member
They look hungry for nitrogen to me.. I would try bumping your PH to 6.5 for a few days and see if that changes, if not then consider supplementing with some CalMag+ (+ being Iron or Fe).

Too much light is very unlikely I'm running Growers Choice ROI-e720 6" from the canopy and no burn or light issues other than the plants loving it.

Seems like you went full throttle with your room setup why would you choose to use Jacks? Personally all the Jacks weed i've smoked has tasted bland and cheap. You get what you pay for.

Here are 4 plants (week 4 bloom) growing in the "AutoPot XL 4 pot System". Nutrients are Botanicare CNS17 base with Hydroplex @ 5.8-6.2 PH (I like to dance it around) and the plants are loving it. First time running the CNS17 1 part nutrients but obviously they're pushing some nice plants. Strain is creamsicle.

Light: Growers Choice ROI-e720 LED
Medium: Royal Gold Tuper (Next time I'm running Mother Earth coco/perlite with the bottom 6" of the pot being #3 chunky perlite for quicker feedings)
Nutrients: CNS17 Grow, Bloom & Ripe
Supplements: Botanicare CalMag+, House & Garden Drip Clean & occasionally 1 oz of 35% h2o2 into the 12 gallon reservoir probably once a week to ensure things stay sterile and clean.

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calvin.m16

calvin.m16

Well-Known Member
canope said:
Ill try lowering co2, im using tap and yes I use air stones
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I'm pretty sure Jacks requires a mixing pump I doubt airstones will keep it in suspension properly. If your rocking 800+ ppm nutrient solution and your plants are hungry then you've got another deficiency or issue unless you're growing 6' tall monsters.

I've ran 3 full crop cycles with 1000, 1250 & 1500 ppm Co2 and there was literally no difference other than I had to swap out my 50 lb tanks way sooner than I wanted with the 1250 & 1500 ppm settings. Yield did not improve with higher Co2 and all other variables staying the same.

I would honestly consider CalMag+ it really does sound like your missing something here. Jacks is cheap crap in my opinion but you be the judge when you smoke it. I'm a quality over quantity grower ¯\_(ツ)_/¯.
 
thenasty1

thenasty1

Well-Known Member
canope said:
Shit you’re right man. Best way to kill them in late flower?
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killing them is pretty much off the table unless youre willing to spray some seriously hazardous shit on your plants this close to harvest (not recommended, highly unethical). what you can do is hold them off until chop time. these little shits hate moisture and humidity, so youll want to keep your rh as high as you can, at least 60% or higher. but youll also want to keep your temps down, ideally less than 80f, because they love heat (which is why they migrate to to canopy). this is where things get dicey, because the climate conditions used to contain mites are prime breeding conditions for pm. mites primary mode of transportation is wind, but good airflow also works against pm. at this point, id say the mites are a bigger concern, so dialing down the air movement may be a good idea. i would also get in there and start yanking leaves- anything with those little spots or webs or anything that looks even remotely fishy. obviously you should contain any removed leaves and dispose of them promptly. you may want to piss on said leaves to assert your dominance over the bug. now this last one is a contentious issue. look into a compound called dichlorovos. iirc youre in canada, and i dont know if its available there, but in the us it is commonly found in a product called hot shots no pest strips. some people are vehemently opposed to its use, others not so much. do some research and decide for yourself. it wont outright kill them when theyre as established as they are, but it can help slow them down enough to limp your girls across the finish line. if you do decide to use it, be safe about it. it can make you sick in the concentration that you would need to apply it. fwiw, i have used it in the past (in combination with the strategies described above). it did what i needed it to do and the flower tested clean (never expected it not to though, dichlorovos breaks down very quickly). another thing- wash your flower after you cut it down. this is common practice for outdoor growers. there are a few different ways that people do this, look up bud washing and it should turn up a few methods for you to look over.
 
thenasty1

thenasty1

Well-Known Member
canope said:
I keep my vpd at 1.3-1.5 during flowering, which I read is ideal
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remember to listen to your plants. whats ideal in one garden may not be quite as ideal in yours. also there are a few different vpd charts floating around and they vary a bit from each other.
either way, if you havent changed your feed or your climate since the last satisfactory run, the bugs are likely whats causing the stress expressions you are seeing imo.
 
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