Hope you are feeling better. Stomach bugs are awful.
I hesitate to say that you have a phosphorus deficiency. I think you need to do more testing/research to find out what is going on with your plants. Are you taking pH readings of your water and feedings? What are the PPM? Have you thought of doing a slurry test? I read that this type of deficiency shows up if the soil is too compact, or you are over-watering. How much of the plant is affected?
How often do you feed your plants? I water about every 3 days and my schedule is feed/feed/Recharge. Recharge is a microbial supplement. Do you have any way to test the moisture levels in your soil?
The reason I say all of this is so you don't just start adding supplements, hoping to correct the balance. Sometimes its a simple thing like letting your soil dry out, or adjusting your pH. Maybe these strains are not fond of a lot of nutes.
likes 2