They'll run out of snails faster than you think. They are such pigs that when the snails are gone, they'll starve for a day or two and then they'll be all over the place at feeding time. I kind of got the same scare, then saw the empty shells as you did, then realised the snails were all gone, next thing, they came out for food clicking away every time
Honestly, I got a snail free tank a couple of days after I got the clowns
Honestly, I got a snail free tank a couple of days after I got the clowns