5 ppms of chlorine in your pool is not shock level. To take your pool up to shock level with a cya of 60 would be 20ppms. The only thing I can think of is that your cya didn't register right away at the beginning, or the test is wrong. That is why we recommend you have a really good test kit. This way you can test your own water and the results will be consistent. I think you need a little POP (pool owners patience) You are putting in too much stuff. It takes chemicals a while to work, and sometimes if you put too much in a small amount of water it will all react against each other, and then you won't know what is working, and what is not. I know that it is very frustrating. Just check your ph, I think when it comes down, and the chorine is at 5 the iron will go back into solution. Your chlorine level should consistently be no lower than 5 with your cya level or you risk getting an algae attack. You don't need anymore sequestering agent as far as I can see. What is your calcium level? Calcium is a metal itself, if the level is too high now with the calhypo and the calcium you added, it could be a problem. You may have to drain and refill a third of the water to get rid of the calcium - Let me know how you do, I am pullin for you