1. Thanks! I got the volume off a online calculator.
2. Ok
3,4,5. Ok. I'll see if I can find borax around here.
6. It's a one speed pump but I do have valves before/ after the pump/filter.
7. What exactly is a DE test of the filter? I read the sticky but not sure what DE is.

I'll have to get the rest if the pump/flock info tomorrow.
Hth 5 way test kit, but having water tested weekly at pool store