several things:

1. You NEED to know the ph of your water. It's distilled and from the store but dont assume it's neutral. I've had distilled water that was ph of 5.5 and then went to another store and had distilled water at 7.4. You should definitely know this PH.

2. You say you're using distilled water or RO water. If so you need to be supplementing with Calcium/Magnesium. This is ESSENTIAL for the plants. Make sure they are getting it.

3. Plants seem big in the picture. Have you pulled the plants from the pots to see if they're rootbound?

4. Have you checked the soil run off ph. This is just as important if not more important than knowing the ph of the water before feeding your plants.

5. Do you ever water with just regular water. Constantly watering with a non organic fertilizer will result in salt build up and give you multiple lockout problems.



I recommend the following based on the little information I do know.

Pull the plant from the pot. Check to see if it is rootbound. If the plant is not rootbound then water the plants until you collect about 3-4oz of run off water.

Check the ph of this water. If it is outside of 6.3-6.8 then you need to do a flush.

People say to flush with 3x the pot size, but I think you should flush until you achieve the desired ph. When you're done with a flush be sure to water with a light nutrient solution. About 1/4 strength.