Here I go again: why all fan leaves yellow and die?

[Ironmike340]

I’ve been struggling with this. I’ve been growing for awhile and never had this problem. Two weeks into flower and plant start yellowing all fan leafs and turn brown and die. My plants are at different stages,but they all are doing it.
I have flushed last week 15 gallons each 5gallon smart pot. It seemed to stop. I thought I had lockout. They were being fed 1100ppm nutes,calmag and rock resonator.
I use ro water with calmag mix it to 240ppm and then nutes.
I finally gave them there first nutes since flushing and the next morning yellow again. I gave 600ppm kept it low. They were getting 1100ppm food and never had a problem.
Is there a bug doing this. I see no bugs in soil I’ve checked numerous leads with scope and nothing.
I was told they were starving at first so gave them a lot of nutes and it got worse until I flushed. Help please

 

[Ironmike340]

Here is what I’m dealing with

 

[Dusted]

Don’t go to extremes when trying to fix a problem. You didn’t mention the pH of your nutrients which is important. Your plants are fairly well developed for two weeks of flowering and yellowing fan leaves are normal as the plant ages, particularly those leaves that don’t get much light

 

[labexperiment]

REQUIRED INFORMATION FOR GROW SUPPORT

What Strain is it?
Is it Indica, Sativa or Hybrid? What percentages?
How Many Plants?
Is it in Vegetative or Flowering Stage?
If in Vegetative Stage... How Long?
If in Flowering Stage... How Long?
Indoor or Outdoor?
Soil, Hydro, Peat or Coco?
If Hydro, Reservoir size?
If Hydro, Reservoir Temperature?
If Hydro, what type of Medium?
If Hydro, what type of Setup?
If Soil, Peat or Coco... What is in your Mix?
If Soil, Peat or Coco... What Size Pot?
Size (Wattage) of Light? How Many?
Is it Air Cooled?
Temperature of Room/Cabinet?
RH of Room/Cabinet?
PH of Medium or Reservoir?
Any Pests?
How Often are you Watering?
Type and Strength of Fertilizers used?
Size or Square Footage of Room?

This information is necessary for accurate support to be given.