I am trying to decide if something is starting to grow or if it just the Houston sun and heat which are beginning to get intense. Here are my numbers:
Last night at 8:30 pm 1 hour after dosing the pool but not dark yet:
This morning at 8:00 am (too lazy to get up before sunrise for a true OCLT):
This evening at 7:00 pm:
I am trying to decide if a 3 ppm loss just means I need to raise my CYA a bit or if it's "Houston, we have a problem".