my fish are starting to grow bigger so i decided to build a new tank fore them currently they are residing in a 9 x 3 pond of course that wont do. i will build the new tank by June. i was thinking what are the footprints for a tank with rtc, tsn, and a hybrid.the best i can do is 10 x 8 x 3 or 12 x 8 x 2. building a tank in srilanka wont cost much a tank with the footprint of 10 x 2 x 1 only costs $150. on the 2 choices above what is the best choice