I think I won the battle with my goby and pistol shrimp. I bought a 10lb bag of crushed coral rinsed it out real good and sprinkled it on top of my dsb. The water cleared up 8 hours later totally the goby looks ticked off but he can't stir up a mess and the other inhabitant's looked tickled that the water is clear again. So at least of the last 2 days my water is again pristine. Heheheheheheheehe, course I'm sure that Mr. Goby and Mr. pistol are plotting their revenge, but until they can figure out how to go about getting it, I think I am safe. 