I have just scored two free tanks. One is a octagonal 12 gallon (31 cm x 31cm x 59 cm tall) and the other is a 4 ft 44 gallon ( 36 cm wide x 46 cm tall x 122 cm long) Just would like some ideas on stocking them. I was thinking maybe guppies in the smaller tank? Both come with heaters and pumps but think I'll upgrade the pump on the 4ft. Would be happy with one or two feature fish in the 4ft but not sure what, or am happy to do a fully planted tank with maybe a tetra selection. I don't know. Help!