So this would be an aquarium room design and the tank sizes I would be going with are a 7 gallons (11.8x11.8x11.8in), 11 gallons (18.9x11.8x11.8in), 25 gallons (18x18x18in), 78 gallon (47.24"x19.69"x19.69"), and lastly 115 gallons (47.24" x 23.62" x 23.62").