Still don't have the dipper but I think I was able to do fine without it.
27,000 GAL In Ground Pool/Spa.
I did a test strip test (Leslie's brand) just before to compare results:
First thing I think I want to do is reduce the Cya to something under 100 by changing out some of the water. I think I want to do this by using a sump pump in the deep end while filling at the same time on the shallow end. I'm afraid to drop the water too much even though i live in a dessert climate.