Safety concerns. Always marinate meat and fish in the refrigerator. You can use some of the marinade for basting after removing the meat or fish from it only if you bring the marinade to a boil and cook for five minutes to kill any bacteria.
Running the pump at night should only be when you are doing a major chemical treatment such as algae clean-up. Your pool is more vulnerable during the day, plants don't grow at night the way they do during the day--that's true of ALL plants including Algae.
I like to run pools with the minimum amount of pool pump run time as possible. It only takes a little experimentation. This will require a pool pump timeclock-don't' rely on your memory to turn a pool pump on and off each day, you are bound to forget. Begin at 12 hours of filter run time per day.sing a 2 speed pool pump will save money, no doubt-even more if you run it only 12-18 hours per day total. Typically the lower speed is 1/8 hp, and consumes only a very small amount of amperage. Experimentation is key here also-perhaps 4-8 hours on high speed and 8-12 hours on low speed, with seasonal adjustments.