i had my fish in a hospital tank and all of a sudden my copod pop went bazzerk there are like 50,000 pods in my 20 long to clowns or damsels eat the pods or are they to small

Don't buy fish just so they will eat the pods. Most nano fish, being carnivorous, will decimate the pod population in a few weeks, though some will always survive. Whatever you do, don't buy a mandarin because you think it can live on just the pods in your tank.

I'm sorry but your post doesn't even make sense...

There are lots of reasons why your copepod population could fluctuate. Sometimes the increase in numbers is only temporary though, so they might disappear just as fast as they appeared. Observe the tank for a few weeks.