@Stephen G posted:How do you determine the height of your structures?
Stephen - no set formula. If one were to build to scale the tank would take up a huge amount of space. In this case I took the largest sheet of plastic I had (12x24) which works out to about 7.5 inch diam tank, folded it over itself and figured out which height looked good. I settled on 6 inches which not only looked 'right' but also gave me material to build 2 tanks.
Tanks can come in all different sizes -