need help, got tank second hand want to set up with tropical fish. first off i need have no idea how to determine the size of tank in gallons. it is a corner bowfront tank that measures 43"front by 26" two sides and 24" deep. right now it is full of water with plastic plants. ph is normal neutral per the test strip. we have one kissing gourami because my wife liked them. had two but one jumped out. we have a cascade 200 filter not sure what the heater is but it is working keeping constant 76 degrees. any input or help with setting up would be great. we like balla sharks and tinfoil barbs but im not sure about having the room. :huh: