I agree with Lotus...that its important to find out whats causing the cloudy before you try throwing a bunch of products at it to make it better.
I dont recall if I've used it with ghost shrimp before, but if you decide you need to use a product to help out you might check out a product called P-Clear I believe Hagen makes it. I've used it a couple of times and it seems to work pretty well without any nasty side effects. Again, I dont remember if there were any inverts in there at the time, think there was probably an apple snail...and maybe shrimp, but not 100% positive.