Summer is over and nights become cold, my friends. And today I disassembled 16-tones summer swimming pool as I don’t heat it this year due to economical reasons. Last year I swim till November, 10 just opening gas heated water for all the night and getting 26 C degrees water temperature to the morning when air was about 10-12 C. But I had a problem with the quality of well water, it was not absolutely clear. Next year I will mount heating system with recycling water. It should be clear and warm.