I leave my aquariums (even brand new ones or recently re-sealed ones) filled with water for 2-3 days just to really make sure they are not leaking.If the seller allows me to test it to be water proof, is there anything I could do other than fill it with water? And even if I fill it completely with water, would this be a good enough test to see if it's waterproof? How long should I leave it filled with water for it to be determined that it's waterproof?
Other than doing my best to clean it out as much as possible, is there any problem with remnants of baking soda left in the tank?I am using a 10 gallon for my beta that I previously used for hamsters, but that's only because I know it is in good condition. If you do decide to buy one second hand that was used for a different kind of pet from fish, clean it out really good. I've used baking soda for the urine spots and bleach because I originally used it for a sick goldfish.