#21392
LatitudeAdjustment - 3/01/2011 10:18 AM


 The real difference is displacement, aluminum tanks have thicker walls because it is a weaker metal so an 80cu. ft. aluminum tank bigger in diameter and/or longer than an 80 cu. ft. steel tank and displacing more water requiring more lead to sink it.


 When I switch between my steel 72’s and aluminum 80’s there is a 6 pound difference on my weights.