So, I've never been an owner or caretaker of any snail. My girlfriend showed up with two Tiger Nerite and had them in the tank while I wasn't in the house. Each was placed on different sides of the divider and neither betta has even poked around or near either snail. My concern is that they haven't moved or come out of their shell to nose around since we've had them for a couple days. Nothing in the way of spikes and nitrates are being held in check with nitrazorb. Neither snail smells or plops out with the Ketchup test. (Shaken like a bottle of Ketchup, not put in Ketchup) Edit: I'm aware of the ammonia and this only rose after the snails. No picture before.