Thanks for the tips.

I checked the levels this morning and my CL looked to be around 2 already! I checked the total CL and it looked to be the same. The water looks crystal clear and it smells fine.

Is it normal for that much CL to be used that quickly? I rarely bring it up to those levels. I shocked it last night around 5:00pm and we get sunlight here till around 9:00pm or so. I have my pump running 11:00am to 11:00pm.

Perhaps my stabilizer level is far lower than I thought. I'm going to have to buy some CYA test chemicals this week.