I've read a couple people using sand from the ocean. But it wasn't beach sand. There are too many toxins introduced by humans that wash up there. Sun tan lotion. Oil Spills (which happened around here). Plus like the man's signature block says. The guys i read about go out a ways. Swims down and dredges up sand from deep and uses that with great success. The ones i've read about also lived in Hawaii and California. So they do have a better sand quality. But they say the introduction of sea born parasites, dieses and such are greater. Soooo......