It's odd. I bought two plastic trash cans of the same size. I mix salt
water in one, and then siphon off water into the second of the same
amount. But, when I refill, I'm always 2-3 gallons short?

I spent some time vacuuming the sand. Man, it's amazing the amount of
crap (literally) that I pulled up. I'm way under my livestock limit,
but there's no lack of detritus.

Just sharing...

--Kurt