The Marco sand is great stuff. I ordered a sample(1 lb) of it. Very soft, nice aragoniute sand, reasonably priced. Passes vinegar test. Will be going in my next tank.
What's the vinegar test?
I don't recommend the high desert play sand. It looks crystalline in the tank, and that color starts looking dingy really quickly.
Really?
Looks pretty sweet in my tank.
I think it looks good in my tank too...