At any rate, I recently set up a brand new 36 inch bowfront tank. After cycling it I went back to my LFS to get my second round of stock. Thanks in part to my own ignorance and to the suggestion of the LFS employee I found myself bringing home 2 Clown Loaches (he actually suggested 4). Their tankmates at the moment include 6 cardinal tetras and 2 sunburst platys. They seem to be adjusting well and I am having a blast watching them interact with each other and their new environment (when they come out of the hole in the driftwood that is).
Of course it wasn't until AFTER I got them home and in the tank that I discovered that Clowns can grow to 12 inches, live for decades, and prefer the company of 4 to 5 other loaches.

So it appears I am in a bit of pickle and was hoping for some advice/guidance about my options for the future of these guys.
Should I:
- Add another clown (or two?!) to meet their social needs, but compound the space issue?
- Leave just the two of them in there to minimize the space crunch, but neglect their social instincts?
- Take them back to the store? This has crossed my mind as a way to "do right by the fish", but then I imagined that being back in a store tank to be given out again to someone who also most likely isn't prepared for them won't be helping them much.
I know, none of them sound acceptable.
This may or may not help you help me, but there is an outside chance that I can upgrade this tank to a larger size... but realistically I will not be able to swing anything along these lines for a year. However, if I do plan on eventually upgrading the tank in that time frame, what then would be the best action to take with them?