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.
Your swimming poolâs circulation system is unique. How many skimmers, bottom drains and return inlets, the size of pluming, type of pump and motor will vary. All of these factors can influence the length of time you should run your pump to circulate and filter your swimming pool water. Generally, this should be a minimum of 6 to 12 hours every day, up to 24 hours a day.