we choose to buy 10 angle fish in the small tank. the small tank holds18.225 gallons and gravel was 2 gallons of the tank so 1 bag. our total cost was $545.50. we got a light, small filter, and a heater. for decorations we got a stone with fake plants, a volcano, corkscrew plant, and ribbon plant. the fish will live together because the are all the same fish type.
30in x14in x10in =4200in3 42000in3 divided by 7.5 = 18.225 30in x 10in x 2in=600in3