Not sure what's going on

Girl Scout cookies and vast&fast

Doing the autos in 7 gallon air pots.
Pro mix hpcc
Biobizz nutrients with some bio weed

I was pretty impressed, day 50 or so and I have some nice little buds popping up all over the place. This is my first grow but I did months of research prior. They are under 2 kind 1000 watt LEDs with co2 at 1500ppm. Humidity is tough but near 60 temps are between 80-84 in a sealed room.

Recently I noticed a bunch of yellow lower leaves dying off and I think I Just added the bloom nutrients a little to soon. Since I saw the yellow I started doing a little more of the bottle. Up to 50% the recommended. Then I saw some burnt tips but the plants still were a little yellow so I did a flush. Ppm is low, ph is good. Since the flush I did one straight water and now I'm seeing all this!!

I would say it's a calcium and or magnesium deficiency right? I just did a feed cause j feel terrible for them. It's Sunday and the grow shop is closed. I added in some fox farm cause it has a little calcium and biobizz has very little. I hope they aren't gonna die! Any suggestions please

I have no clue man. Comparing it to my handy deficiency/excess poster from Soft Secrets, looks similar to Potassium deficiency.

I know nothing, proudly.

Sick

However, here are the photos for calcium and magnesium, if they help. I fucking hate Sundays, always need to buy shit on Sunday's

have you been allowing enough run off ? and 7 gals is a lot of soil maybe some dry spots or salt build up i know the bigger airpots are harder to get soaked all the way some times , kinda looks like cal/mag and the little crunchy patches "necrotic patches " is either p or k def .... so maybe just hungry .... possibly ph issue

promix hpcc is coco ? if so then they may need some cal/mag and bloom feed coco tends to leech .... but ya definitely try and get plenty of run off of just plain water it made a world of difference when i started watering with good run off then feeding on top of it

Yeah that's been a bitch too. The 7 gallons are massive pots which I kicked myself for on every watering buuuut, I can't seem to control the roots as it is. Shortly after the flush as some soil disappeared from the top the whole top is solid with roots. They are raised on metal screens above the saucers and I have a massive amount of root growth below the pot too.


I usually fill the saucers once or twice with the runoff that I vac out immediately.

The soil is hp-high porosity cc-coconut coir

It's just filled with perlite and coconut bark.


They do look hungry! I noticed a little difference when I did the extra feeding but was also nervous of lock out so that's why I did the flush. Now I'm back to this spot again. I fed last night and will add some calmag tonight so I hope to see an improvement.