OK...I have a CYA of 80 and my Chlorine has been at shock levels for about a week killing of a nice algae bloom. The water is clearing in my 6300 gallong AG vinyl pool, but I still have fall out at the bottom that isn't filtering out. When I vacuum it blows right back into the pool through the return. (Intex filtration system).

Have a 5-way drop test kit from Walmart that I have been using this season. My CL levels are off the chart. It registers as a bright yellow-orange color instead of yellow. Yellow at the darkest end indicates 5-10ppm of CL. I have no idea what it is right now beyond it's way higher than 5-10 ppm.

I'm concerned about swim safety with regard to the high levels as well as possible damage to the pool. pH is at 7.2. Alk is 120.

Any ideas about how high the CL really is? Is there a drop test the actually tests above 10ppm?