Thanks Larry,
Culling was really hard to do, but I use clove oil so at least I know that they don't suffer or feel any pain. It truly was the best course of action, just hard to bring myself to cull 7" discus who were so pretty!
I did save two of them. They are a mated pair and the best of the bunch. I plan to use the tester discus on them once we're done testing the current jumbo QT tank. For now they are living at my sons house and laying eating like pigs. LOL