Quote Originally Posted by Watermom
There is no magic temperature where algae begins to grow. We had kind of always told people that as long as your water was under 50 degrees, it was probably unlikely that algae would start. But, this winter, a couple of us (Poconos and me) both had a very slight streak of algae in our pools and our water temps were in the mid-40s. So, who knows! As long as your ph stays above 7.0 and you just keep an eye on things, you can wait a little longer to actually have to begin testing every day. Maybe just visually check the water and test a couple of times a week for now.
I agree - I'm in the same situation with the cold weather. I took my safety cover off last week and added some bleach and baking soda. My CYA was 35 so I didn't touch that. I also added some more polyquat algaecide and put my solar cover on, and I'm checking the water 1x per week until things warm up.