My pleasure! Gardening is a constant learning process, so experimenting is what I love most about it. Testing brix levels can be tricky and costly if you get the proper tools. You'll need a refractometer to actually test the levels, however, there are some ways to enhance your soil that will not require expensive tools.
One thing to note is testing soil can give you some idea of what nutrients are deficient and which are excessive. Too much nitrogen can cause many issues that make plants vulnerable to pests. N-P-K are the three main ones to test for. If you have too much nitrogen/nitrates then try to increase the potassium levels.
It can be overwhelming, I know. Start small and build up. There's so much reading and experimenting that you'll never get bored in the garden again..lol
Here are some articles I bookmarked that really helped me start to understand all this:
• http://npk-industries.com/resources_BULDING_up_the_Brix.html
• https://www.highbrixgardens.com/victory-gardens/the-path-to-high-brix.html
• https://www.maximumyield.com/building-up-the-brix-for-healthier-nutrient-dense-crops/2/1282
These were three articles that really piqued my interest and I tried several techniques last year. I was really astonished at the results I was able to accomplish. The prior year I had pest issues and my highest yield on a single indeterminate tomato plant was 22lbs or so. Last year I was able to pull 53 lb of tomatoes from a single indeterminate tomato plant. Less pest damage and nearly doubled my max yield per plant by experimenting. At this time last year I already 6wk old plants outside, but this year the weather has not been as cooperative 😆
Momma Nature is the Boss, we are just the garden accountants and labor force 😋
Wow, thank you so much for taking the time to write! You gave me so much great info. I will be spending some time reading. 53 lbs of tomatoes from one single indeterminate tomato plant is absolutely amazing! I still have a lot to learn for sure.