Nutrient Problem 6000w Organic Grow

Hey dudes, I'm reposting from the Nutrient Problems thread because I was told I might get better insight here. I'm having trouble figuring these girls out.

I've been trying to figure out what these plants want (please see pics). This is a 6000w air cooled system.

This is a Prop 215 grow in California for our patients. The plants look like they have a Nitrogen deficiency but I've upped it with no progress yet. So here's the setup:

80F 40% humidity

Week 4 of flower. FFOF in 5 gallon bags.that keep frigin drying out and having to water every other day. The schedule goes like this: feed once a week, water, water/molasses, water, feed.

Strains:
Lemonade
Tangie
Gorilla Glue
Chocolate Hashberry
THC Bomb
Chiesel
The White
White Buffalo
Chem 4

This is the 3rd run in this room 1st time with 6000w, originally I had it set to 3600w with no nutrient problems.

Nutrients:
Earth Juice grow
Earth Juice Bloom
Bone Marrow
Cal-Mag
Molasses
Meta-K

Last feeding amount hand-watering in 5 gallon containers:
Earth Juice Grow 7 TBL
Bloom 6TBL
Bone 4 TBL
Cal-Mag 3TBL
Molasses 4TBL
Meta-K 2TBL

Final PH is 6.2-6.3 and PPM's right now 1,004.



Advice would help. Thanks in advanced.

Might be related to what you said about your soil drying out and air pruning the roots/starving the plants. Or molasses every week could be major overkill.
And when you say bone marrow. What exactly is this?
Looks to me like a mix of deficiencies due to lockout. I would cut down on your feeding and top dress with ewc or good quality compost and an all purpose slow realease. Like biotone, or any epsoma tone product. Something with 3-4-4 or simular npk. Quit the phing and ppming and bottles regimens. Make sure your soil has adequate moisture levels. Never dries out. Once that happens it's a pain to keep roots happy. Fabric pots to me are almost s waste of time unless your wicking your water from the bottom up. Anyway. Good luck there

If the RH for the first 4 weeks of flowering was 40% while at around 80F, I would say this is your issue. The humidity is a little low. I have had this same problem before, and have found keeping the RH as close to the 50-60% range for the first few weeks of flowering, this issue does not occur. This is also probably the reason your soil is drying out so fast. For last week of flowering 40% would be about as low as I would personally every go. For better information check out a Vapor Pressure Deficit chart ( VPD chart).

Oh man thank you. I knew in flower 40% is good but didn't know about the first few weeks. I actually had a bad situation happen yesterday. The plants were fried from my hitting the wrong button to Dry Mode on the AC remote. Sucks.

Check your soil temps. If it is over 72 drop your room temp by 2-4 degrees. What ever cools your roots. Quit with the sugar you are not baking a cake. Well maybe you are , but you shouldn't be
Every water day add cal mag at half strenght or 2 mL per gallon.
Also keep in mind your chem nutes do fight you're bennies. The fact that your pots are still drying out is a very good thing. It means you plants are still health in spite of their appearance

Thank you for your reply. It was hard to keep the temps down when its 90-100 degrees over here. I wanted to run them at night but there's light leak issues. I'll definitely keep that in mind tho I appreciate it. Anyway, these plants just fried yesterday due to a stupid mistake. Here's the thread https://www.rollitup.org/t/plants-fried-worth-saving.947486/

Look into air conditioning or your yields will suffer for sure, 80 is much too hot for that much light.

Fortunately you're in week 4 and if you get this resolved within the week you can mitigate a lot of the damage. When you say 80 degrees, is that ambient or canopy temps? Canopy temps are what need to be 75-77, not the ambient temps. What's more is I'm not seeing any wall fans? You will either need to look into some of those or raise the lights a tad. Even with good ventilation, you can still burn them if they're too close. Without a fan circulating the air over the canopy it'll create hot spots, kind of like a breeze only hitting half your body. You're suffering from a combination of heat stress and light burn, mostly the heat stress but that's contributing to the light burn for sure. Your humidity being on the lower side is also contributing to these factors.

Just get yourself some air conditioning and you'll be set. I ran a 4400w grow with only 2000w in hoods, took two 15k window units to keep temps steady. Fortunately it looks like you have hoods, but you'll still need a sizeable unit. This is exactly what happened to me and I'd hate to see it happen to you as well. Ran CO2 until week 6, but forgot to bring my temps down from 80 when the CO2 was on. Plants suffered as a result. If you get some wall fans and an air conditioner going you can save yourself a lot of heartache.

Hope this helped