They are beautiful crabs, but it's a give/take relationship in trying to satisfy them while trying to prevent the above from happening..... Here's what I mean, based on my theory (mentioned earlier) as to why they were killing, I provided more extra shells and I would feed a little extra so that some would fall to the substrate to keep them fed, thinking this would slow down the attacks. Well, it did, but then I end up with one algea outbreak after another because of all the excess food. So I cut back to normal feedings, algea gets better but the serial killers resurface. So I concluded that it has to be a larger ratio of snails to crabs, and keep the crabs to a smaller, managable size. It seems to be working.
Yours probably will be small, as most are. The last one that I just took out was the size of a golfball, no exaggeration. So now I just have the dime/nickle size one's in the tank and murder rate has declined.
