The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
As long as there is no over feeding there would be no overpopulation. But I don't see any harm of having too much, it may not be visually pleasing but that's about it.
I have some of these as well. At first I was like, hell no!
But in researching about them I read they can be a good indicator if there is something wrong with the water. If they start heading to the top during the day you should do a water change! But remember it is normal for them to climb at night.
they regulate their own reproduction, if there isn't enough food they don't reproduce. So if you have them be very aware of how much you feed.
I kind of become found of them...sorta. My bigger ones shells are almost 1/4 inch long!