Well, a 110 gallon is heavy...and 2-3 pounds/gallon is too low. One litre is one kilogram, so that when you do the math, one gallon is about 10 pounds. So, a 110 gallon tank would be over 1000 pounds, just with the water, ignoring everything else. Then you have probably 1 pound of gravel per gallon (just a guess) with odds and end that also add to the weight. It just adds up quickly. I have a 27 tank on a built-in desk in my room, and since we weren't sure that it would hold, I reinforced it and then my brother and I sat on it awhile...all 340 pounds of us. |