Hey everyone, I have a 48" long 12" wide and 15" high tank, I'm getting a fluval 205 external filter and a 150watt heater and I think I'm gonna go with sand for the bottom, I've decided to go for a 'Asian riverbed theme' I'm gonna get 12 zebra danios, 8 tiger barbs 2 tinfoil barbs and 1 red tail shark. do u think this will be ok?? Thanks for any feedback.