On Sunday evening:
Added liquid chlorine to bring FC back up to 8.
Hmmm... that seems weird.
Thought maybe I'm doing the test too fast now that I'm familiar with it. So, re-did the test immediately and came up with 8.0 - within the testing margin of error.
Is there anything that I could be doing wrong? Is this at all something that would be expected? From everything I've read on the site -- chlorine is a consumable that needs to be replenished daily.
Are there chlorine fairies?