Since the pandemic, we can’t find bleach anywhere, so we’ve been using chlorine tablets and shock packets instead. Our numbers are:
CYA 35
FC 4.5
CC 0
TA 100
PH 7.5
But we can’t get rid of a yellow, powdery algae (?), even when we shock, bringing FC up to 12, to try and get rid of it. We also...