I’ve been keeping a 20-gallon tank for farming snails and shrimp the last few years. The big tank denizens in the main room get live food from it – whenever there’s enough to actually do that, which has not been very often until sometime recently. Not sure why it took 3 years for it to take off. My best guess is maybe I was not feeding the shrimp and snails enough. In any case, yesterday was the 1st time I was able pull out a full meal’s worth of shrimp. Fresh food is always the best, whether you are a fish or any other creature. They also seem to have a great time exercising their predatory instincts chasing them around.