Blue 16mil 400μm 16 * 32FT Rectangle Solar Pool Safety Cover Heavy-Duty Insulating Heat Retaining Blanket for InGround Swimming Pools for Waterproof and Dustproof

My pool gets full sun and we cover it with a solar blanket while we aren’t in it. The water has been in the mid-80s for about two weeks now and we don’t have a heater. We’ve been swimming every day for a while now! Maybe a solar cover would help you too! And save on your heating bill. Here’s the one we have if you’re interested : https://www.amazon.com/dp/B09XWYY92H