Above Ground Pool. I am having a get together this weekend. The temp is going to drop into the mid 60’s. I hate to deal with the plastic solar covers (and I don’t think they work all that well). I would consider a black tube solar heating system but don’t know how effective they are. Are there any chemicals that will do it? What about the solar fish that leaks os Isopropyl Alcohol? I don’t want to spend a ton…as I hope to get a heater next season

We’re not allowed to use fire or metal or solar or anything like that. Only by myself, anyone have any ideas? I’m thinking of using the sun? but I do not know how. The water should be hot in 3-7 minutes.
Thank you for that! But I forgot to mention that we’re not allowed to use any chemicals. Do you have any other ideas? We’re supposted to use our body energy to heat the water.
Thank you for that! But I forgot to mention that we’re not allowed to use any chemicals. Do you have any other ideas? We’re supposted to use our body energy to heat the water.