help with water proofing

ok so I have been wanting to do a diy tank for a long time. I just got a house so I am starting to get my list together for the things I would need... when it comes to water proofing the tank I am finding a whole bunch of different ideas. I wanted to know the opinion of other people what is better... I have heard of sanitred, hardibacker board and drylok , boat cote epoxy, liquid rubber pond armor and fiber glass.. just wondering if anyone has any favorites that will last..