What is DE?

[KurtV]

Thanks for the clarifications - I really appreciate it.

Where do I buy this? And are there different "types" or just DE...period?

Thanks,
C

There are several grades of DE: Pool, Horticultural, Food, etc. I'd use only pool grade in your pool filter to be safe (though I have no idea what would happen if you used another grade).

As Carl said, pool stores will have the right stuff. So will Wal-Mart, Home Depot, Lowes, etc. (in the pool season).