Quote Originally Posted by Watermom View Post
You are right that evening is the best time to add bleach but since you basically have none in there, if you can, it would be best to also go ahead and add some now. (Probably need more in the evening, too, to get back to shock level.)

And yes, I know it seems funny that there could be an issue when your water is clear but sometimes you can't see stuff that is going on in there. Clear can be deceiving.
+1

This spring I was dealing with the byproducts off CYA biodegrading over the winter. Just like the OP, my water was clear; there was no visual indication anything was amiss. After about 25 gal. of bleach CL levels finally held. Now I'm enjoying! (Yes, that's me in my pic)