and depending on how good the employees are at your local stores, they may tell you that a bigger tank is needed in the future. one of my local Pmarts is full of idiots (one employee saw me looking at severums and came over and said"these are my favorite!" and then started tapping on the glass. all the fish cowered in fear.) and the other one has a few really great people who are very knowledgable about tank sizes and compatibility, above and beyond the limited training they get.
