1/4 strength to start and work your way up to what the plant will take. And just plain ph/RO water for the first 10-14 days. (Soil dependent)
...is how I have been instructed (I'm on my first grow and am on Fox Farm Nutes as well)
Apparently Fox Farm nutes have fairly heavy salt build up so it may be necessary to flush between veg and bloom nutes.
There are different favorites, other than Fox Farm, around here so you may want to read around and see what some of the
veterans are running.
You haven't said what medium or method you'll be using, I assumed amended soil. All nute suggestions will be unique
to what medium and method you'll be using.