We've had some cool weather here recently and pool is now 76 - was 84 last week. Is it normal for average and instant salt readings to increase slightly as the water cools down? They've increased about 150 ppm since last week. I understand that, with Aqua Rite, temperature is a factor in how much salt it thinks is in the pool. If this is true then I definitely don't need to be adding any salt in September.