Brad, you should definitely try some of this!
Once I started adding back the rostram candy (am I spelling this right?), I am seeing some nice improvements in the shrimp. I am adding half the amount as directed just to be cautious and will slowly add more each water change. I must say I am noticing some major improvements to both the shrimps' behavior and the water. I thought my water was clear before, but WOW this is crystal clear. The biggest improvement is the snail shells. They are looking so fine that I have a feeling I am about to see some major snail population. Two thumbs up for the clay based on that alone. I'll try to get a picture soon of the shrimp and snails.
Without Algae, death of mankind would be inevitable.