I never really thought about it but we live in a doublewide manufactured home. Its from around the 60's my fiance says but it looks newer to me. Anyway I got under it today and I cant tell if there are cynderblocks under the tank or not. Should I reinforce the floor underneath? I estimated my 50gallon to weigh with the stand around 600 pounds. The floor underneath the house looks healthy. There are no leaks or anything under there, Very dry. Well what do you guys think?