Oh I'm not worried at all. I have an algae outbreak, so the snails are doing their job quite well. I like the trumpets, quite nice to look at. But I'm just more curious on the assassin snails, as I've read that some people had assassin snails wipe out an entire tank in a day or two, but right now my assassins are doing half of their namesake, and just hiding in the sand. Haha. I did find 2 more empty pouch snail shells today, so maybe they're just being super ninjas. Haha.
And I put the trumpets in cause they help turn the sand, preventing dead pockets from forming. So for now, they shall be spared....haha.