Trochus SnailHow to Care for Trochus Snail written by Dave Burr Trochus Snails are very effective at controlling the growth of undesirable algae in aquariums. They will eat algae off of the rocks and aquarium glass. They are one of the better snails when it comes to flipping themselves back over after a fall. Feeding: If no algae is present in the aquarium you may supplement the Trochus Snails' diet with live macro algae or dried seaweed (nori). Growth: