Chlorine demand that moves with the month
UV breaks down free chlorine, and daily maximums climb from 25.8 °C in October to 29.1 °C in January. The requirement rises through spring and peaks with the storm season; the product does not change, the quantity does.
Owners read it as chlorine that has failed and buy more of it, or buy a summer's worth in October and dose with something weaker than the label says by February, because liquid chlorine loses strength in storage, faster in heat and light.
Chlorine, salt and stabiliser sized to the reading and the month at all three counters, and a straight answer on what is worth buying ahead (chlorine and salt) and what is not (specialty products that degrade on the shelf).