There seems to be a debate about this. Some say a BGK is fine for life in a 55, and some say no. One of the problems is, theres also mixed info about max size of BGKs. Some people only say what they have read or heard, but havent actually seen a BGK reach the max size they have been claimed to reach. I even read a blog once that said BGKs can reach 3 foot! So is 55 gallons acccptable as the minimum or is it not?