Thanks Dmoore! Love your 72's BTW

Primer/sealer makes sense. I've found traces all over now that I've had time to look.

I've got about 3 hours in vacuuming and blowing out media. A leaf blower sure came in handy, although it does a better job of blowing sand into areas I just vacuumed & all over me. I'm sure glad I stopped at the spray & wash on my way home to vacuum a bulk of the media out...although the owner of that place may not feel the same way when they find 20lbs of media in their hopper