This is my second year with a pool. I'm still learning and trying to insure everything seems right. I set up a Stenner this season, and I'm adding about 7 oz of 8.25% bleach per day. This is about a .25FC loss per day. The solar cover is on full time, and the water temp is in the mid to upper 50's (it's been pretty cold for this time of year). With these temperatures, should I need to add any bleach at all? I ask because I hear people talking about FC lasting through the winter. At this rate of loss, I would be out of FC in about 1.5 months after the closing SLAM (I had 0 FC on opening with a mesh cover). If this seems right, it's fine, but if it seems off I'd start an algae search.