Alright so here's what i've concluded. He's gotta go.
This snail is not collected for aquarium trade, it's really beautiful and comes from the tropical waters on the western side of central america. The issue is, he's a killer but read on because it's not that bad. Hexaplex erythrostomus is a snail which usually is collected for the sole purpose of selling their shells. A woman who went to Mexico for vacation was collecting shells and ended up bringing home a live one. He lived a week with out water, and when she realized that she had a live one, brought him to a local fish store. I put him in my predator tank to eat up the diatoms and he literally cleared my entire sand in a night and ate a chunk of shrimp that I usually feed my anemone this morning (will post video in comments). I can't keep him, because eventually he's going to off my Urchin and Halloween Hermit, and probably end up as dinner for my Carpet Anemone. I found him a good home in a 50 gallon refugium.
Here's what he will do: He will 100% kill and eat any animals that are either very slow or stationary in this fuge. Hexaplex erythrostomus is scavenger of sessile animals. Sessile animals are any animals that can't get away on it's own easily. Corals, Anemones (yes including Aptasia) starfish, barnicals, muscles, tubeworms, most snails, some crabs, bristle worms, etc. While on the hunt they will eat detritus and stir up your sand
Here's what he won't do: He won't play nice with your tankmates. He will eat and kill anything in your display tank and he won't eat coraline. He also won't clog any pumps because this snail is huge, larger than a golf ball.
His name is Dexter.