I have a 125 gal
reef tank with LS
a 40 gal
long sump and I do 35 gal
water changes on the second floor in my house. So far I have no problems (knock on wood) it is a new house (built in 2001) and I just have the perfect room up there for it. I just advised my Insurance co. to make sure I would be covered. So far all I have messed up was I forgot to turn off the RO
faucet when I was filling the barrel for a water change one day and I left the house. It overflowed and leaked down to the basement. Now I have a water spot about 12 inches in my first floor hall ceiling. My wife was not too happy, but she's the one that wanted it upstairs.