OK, that's the 110 correct? Looks like it to me. That won't strip your tank. I used it on a 12 gallon nano and a 40G nano with a 10 gallon sump and it didn't strip NO3, I was trying to get them down...
You won't have to dose forever, just until you tank balances out. It's always good to test when you can, especially if you have a system that runs very low nutrients. Once you tank finds a better place to balance you won't have to test as often.