I'm in Central Texas and keep my pool open all winter (this is the first winter using TFP methods). I've searched and read a few threads, but haven't gotten what i'm looking for (not to say i didn't miss it). Details: 1. I've been monitoring the chlorine and pH levels regularly and they are hardly changing. Chlorine goes down either 1ppm or less daily. pH is staying fairly regular at 7.6-7.8 (which is where i want to be based on pool math/CSI). 2. While we do have a large tree, and thus leaves, we are keeping them scooped up fairly regularly throughout the day. 3. Once the temps get below 36f, the pump kicks on to circulate the water to prevent freezing in pipes. Question: 1. If i keep my chlorine level appropriate to my CYA (using bleach), is there any (proper care) reason to run the pump (separate from freezing temp cycles)? I guess i'm specifically asking if there is a scientific reason to circulate/filter the water. I've been experimenting with only running it manually, once per week for a few hours (to add my chemicals). 2. Is this pattern going to rear up and bite me, or is it reasonable? water remains clear and CSI is being maintained.