Thanks to everyone for all the valuable input. Iโm so glad to have this community. Iโm embarrassed to report this as itโs such a silly resolution to my problem. Apparently I found my PH was having nasty volatility swings, causing my plant to either consume too much of one nutrient, and not enough of others, etc.
I was setting my PH to 6.0 and found it down as low as 4.2 in 24 hours. I usually check every two days so I could possibly be running toxic for over a day at a time. Started using SI and noticed it remaining more balanced. This is the first time Iโve run individual DWC buckets. My old setup was a 6 auto flood buckets with a 25 gallon reservoir. Less volatile compared to stationary 5 gallon pals. Still learning as I go. Thanks again everyone!!!