Weird autopot issues? - Problem: Leaves look droopy

[asteroidgroundhogday]

Problem: Leaves look droopy

Medium/grow method: Coco cor, with perlite 70/30 + perlite at bottom of planters - INSIDE AUTOPOTS auto watering system

Feed: and supplements used: Megacrop 2 part at 1.4EC and 5.8PH

water source: RO filter tested at 20PPM

Strain/age: Bubblegush about 2 months now.

light used: QB 240w x4 LED

Climate: 78F at 59% humidity

Light cycle is 18/6
Light height 24" from plant

Additional info:
Hey guys! was curious if you all had any thoughts on why only my back two plants seem to be going astray... I just cleaned the trays out and had some pebbles stuck on the upper valve on the top left plant.

Also should mention, I accidentally let my res go for 3 weeks before changing it...

Now we are at a stable 5.8 PH and 1.4EC feed and they seem to be doing kinda better.. but wondering how long I should wait before I begin to suspect something else
perhaps?

Here is all four for reference.

 

[asteroidgroundhogday]

Here's my front two today, and my back two today.

Old thread here: https://www.autoflower.org/threads/autopot-troubles-might-need-some-help.81446/

 

[Mañ'O'Green]

I need more information on your feed schedule How much of each part (part A, part B) are you using? how are you mixing it. Not changing the res may have introduced pathogens? Your plants look over-all starved but that might be your environment. RH is getting too high or too low when you are not looking?

Tag me with the answers.

 

[St. Tom]

they look in rough shape and by taking them off the res i would of top fed them ages ago to test the run off but I'm pretty sure you can recover them especially with mog in your corner

 

[asteroidgroundhogday]

I need more information on your feed schedule How much of each part (part A, part B) are you using? how are you mixing it. Not changing the res may have introduced pathogens? Your plants look over-all starved but that might be your environment. RH is getting too high or too low when you are not looking?

Tag me with the answers.

I am using 2.5 of each part per gallon as per the bag they come in,

RH stays a constant 50-60% due to automation i've put in place.

 

[asteroidgroundhogday]

they look in rough shape and by taking them off the res i would of top fed them ages ago to test the run off but I'm pretty sure you can recover them especially with mog in your corner

since it's autopots, I don't want to kill them with salts by top feeding now, (a big no no in the autopot game)

 

[St. Tom]

since it's autopots, I don't want to kill them with salts by top feeding now, (a big no no in the autopot game)

I've grown with autopots for many years mate so i have plenty of experience and I'm pretty sure you have a lockout

 

[asteroidgroundhogday]

I've grown with autopots for many years mate so i have plenty of experience and I'm pretty sure you have a lockout

So you're suggesting to flush my medium via top feed with the plants out of the auto-pots?

 

[St. Tom]

I've grown with autopots for many years mate so i have plenty of experience and I'm pretty sure you have a lockout i had slight issues with this back left one and shes back in line after a few days

 

[St. Tom]

So you're suggesting to flush my medium via top feed with the plants out of the auto-pots?

yes mate a million percent so turn of your res and even lift them out of the bases unless your going to suck the run off up and then test your run off and check the ec of ppm of whats coming out