The container experiment is still going well, though I have been getting drought stress and what appears to be nutrient deficiency. So I laid down $20 for a second irrigation controller that can do 8 starts per day for the drippers. For the nutrients apparently what the cool kids do is get a fertilizer injector for the drip system to continuously feed liquid fertilizer [since granules are dependent on top watering to release fertilizer]. The good injectors ones will set you back $250+ [and of course water-soluble or liquid fertilizer is more expensive].
I lost track...is this tomatoes in containers? Mrs. Piob had a problem doing this a couple years ago and she researched a specific nutrient was needed of they sort of atrophied on the bottom badly and were inedible. I'll ask her if you want. FWIW, she was using Grow Boxes or something. Built in irrigation and ways to fertilize I guess.