Okay, I know these are pretty common issues and I tried the search and also did a lot of reading on older threads but, hope you don't mind answering them again.
I have an 18' by 42" Intex Easy Set with the Model 635 pump. According to Intex the pool holds 5400 gallons and the pump puts out 1500 GPH. Intex says to run the pump 4 hours per day.
So my questions are (for now ) are:
1. Should I run the pump for the 4 hours all at once or split it up? I have a timer that will do two on/off cycles.
2. What time(s) of day should I run it -- during the day or at night?
3. Should I do the water tests close to the eind of a run time or does it matter?