One of the people living there told me they filled up a 5 gallon bucket of water at the neighbor’s house every day so they could flush the toilet at the end of the day…pretty disgusting was right.  

But, you don't have to allow him to move in the entire ocean.Where I live, you can only have a 1 gallon aquarium. 

Early on I did not allow pets and my tenant had a 100 gallon fish tank with fish.  

If you want a better quality, the best I've found for the money is Conco at Menards (made by Sherwin Williams) for about 15 bucks a gallon.  

I just had a house with two 500 gallon septic tanks inspected.

Probably a 7 1/4 in. circular saw.Get a standard 5-gallon bucket to start with.

A couple gallons of waterproofing roll on stuff might work for your situation.

A reasonable size for someone into fish is 30 gallons. 

They won't include your well-being in that decision.Why do people spend so much more per gallon for Chevron gas?  

Dip the tank when the tenant moves in , measure the inches in the tank , you can find a chart online that converts the inches to gallons .