Don't ppl know how to do the inches to gallon math conversion?....
No way it's 8 x 4 x 2 that's 480 gallons.. Also 10 x 4 x 1 is out of the question too. That's 300 gallons... The op said its 200 gallons. The 8 x 3 x 15" would be the closest as these dimensions is around 224 gallons.