Cotinine is detectable in blood for at least several days after exposure to tobacco smoke. Depending on how much you smoke, the level of cotinine in your blood will reflect a nonsmoker level in 7 to 10 days. The nicotine test that offers the longest detection window is a hair follicle nicotine test. These are rarely administered due to their expense, but they do exist.
High pH is NOT always BAD! But, high pH is NOT always GOOD, either! The recommendation that swimming pools should be operated at pH levels between 7.2 and 7.6 is almost universal. This recommendation is enshrined in generations of pool books and literature. It's embedded in many state swimming pool codes. Unfortunately, for most swimming pools, it's also far from ideal.
As far as warm water goes, the preparation for handling it isnât as well researched, but itâs best to keep warm water for lounging around in. If youâre looking for a perfect pool temperature, not too hot, not too cold, 77 â 82 degrees (25 â 28Â°C) is the way to go. Goldilocks had it right. Here are some helpful articles on heating and maintaining the temperature in your swimming pool: How to Use a Solar Pool Cover.