Didn't go through all the replies but in case no one mentioned no matter what you lay under the tank the carpet will be ruined and you shouldn't expect any return on your deposit for that. I've had bigger in apartments(ground floor) and never had a problem.
Spillage I did see good advise but sans a catastrophic failure in the tank I wouldn't even bother with.
But you should also look into your state's laws and renters insurance policy and consult with a local lawyer if you are so concerned before trusting the internet.
Spillage I did see good advise but sans a catastrophic failure in the tank I wouldn't even bother with.
But you should also look into your state's laws and renters insurance policy and consult with a local lawyer if you are so concerned before trusting the internet.