This topic came at just the right time for me, as I was going to start one. I've seen some really beautiful Male Bettas at my local garden centre. I've been thinking for ages that I'd like to keep one, but just haven't had the money spare for a tank and all the 'extras'. Now I've seen a small tank (think it was 25 litres) with everything included (heater, pump, filer, gravel etc etc) at a very reasonable price. Will this size also be OK for 1 Male Betta and perhaps some small fish? I have always thought that I'd like to keep a shrimp. I also have snails in my larger tank, but I don't think there's any point putting them in my brand new tank.