Just a thought, GB, I like splitting my feed schedules so every watering has a dose in it. So if I water twice a week, it's two half doses, instead of one big one. That lets me tweak things... a little more here, a little less there, and if I'm going too hot maybe just some cal/mag or a shot of molasses in pH'ed water.
That's the cool thing about growing, Brother. No one way is the only way. Like my Nana used to say, "Don't be afraid to take that thing out and play with it". Oh, wait, that wasn't granny....

I've had great luck using GA's pH chart to figure out where I need to be:
PH Calculation Guide by GoAuto6
Rough Calculation Guide:
Here's some good info on ph.....
If your runoff pH is higher than your starting pH, use this equation to determine your soil pH:*
Soil pH = Runoff pH + Difference
If your runoff pH is lower than your starting pH, us this equation:
Soil pH = Runoff pH - Difference.
For example, say your the starting pH of your solution before it goes in is 6.5 and the pH of your runoff is 7.0. The difference is +0.5, so using the above equation:
Soil pH = 7.0 + 0.5*
Soil pH = 7.5
If your starting pH is 6.5 and your runoff is 6.0, your difference is -0.5 and using the above equation:
Soil pH = 6.0 - 0.5
Soil pH = 5.5