I’m surprised I didn’t get a notification about your post like I usually do. Luckily I came here to take a look.
The plants look great!! As I mentioned in an earlier post you will need a bigger reservoir as tomatoes will suck up a lot of water. If you can bury a little 100 gallon water tank (pic below) or have it above ground in the shade or wrapped with reflective material or aluminum foil you wouldn’t have to constantly add water. It could be used this time of the year till it starts to get cold again.
Those plants will start to get very heavy when tomatoes start growing all over like crazy. I use heavy gauge cattle fencing in order to make round tomato cages for each plant. You can see them in my pics with the Dutch buckets. You will also need to separate the plants more for your next outdoor grow then go back to this during the colder months.
Once you see the plants are completely full with tomatoes cut down the nutes between 1/4 and 1/2. This is the time to add an extension with more 5 gallon buckets with new plants in them being fed the nutes. By the time you’ve picked your last tomato from this group you should already have plenty of tomatoes forming in the next group.
See I told you it’s easy. When using the right nutes the plants take care of themselves. Great work with this being your first attempt. You will get better and better after each grow. Keep a log book of the temps amount of plants and how much nutes you use and how much approximately each plant takes in of water. You will eventually know How much nutes you need during the full grow cycle.
Now I want to see pucks of some of the tomatoes you get. Cut them open and see how juicy they are and since you’ve been adding the epsom salt they will taste amazing!
https://www.interplantsales.com/imag...age%20Tank.JPG