Pennington Smart Feed for vegetables

[cadmaster77]

hello again all, 2 questions for someone with a lot more knowledge than me at vegetable gardening..

- I bought a PH and moistness reader.. I understand the moistness, but the PH I cant figure out how to read and understand what is good and not.. see pic below

- I purchased the "pennington smart feed" with tablets.. I think I'm suppose to use it once a week, my garden is only about 100 square feet, thats about a 1/3 tablet for my garden per week.. is this a good product to use, and will it help with the assumed low nitrogen issue (per previous post), if it actually is low nitrogen.. see pic below

thanks again!

[Dillbert]

the pH scale appears to be the bottom row of blips - labeled 8.0 to 3.5

the pH scale ranges from 0 to 16 with 7 being "neutral"

numbers lower that 7 represent an acid condition
numbers above 7 represent an alkaline condition

most veggies prefer the 5.x - 7 range - I.e. slighlty acid
there are exceptions

aside from that, I've never met any of the soil probe devices that were adequate to their marketing hype, fwiw.