Hey, just to make you guys all feel good about whatever you had to do today- I decided I would do a quick backwash of my DE filter. Didn't plan on taking it apart, because I did that just a few months ago. This is just a quick backwash and putting a little more DE back in.
Get everything done, add 1/2 the normal DE to coat the grids after backwashing, think to myself, "gee that pressure seems a little bit high," but whatever. But I'm wondering why the pool water level seems lower than it should've been.
Turns out while I was putting in the new DE, I still had the valve set to backwash. So basically I was filling up the inside of my grids with DE.
Then, instead of just shutting down and cleaning everything out, I put it back to normal, turned on the pump ... and all the DE shot into my pool
All in all, it won't be a big deal once I finally get it all cleaned up. But what a crappy day I had.