I was reffering to population limit, w/ 25 lemon teras who grow to 2'', you might be limited on the number of corys you should put in there,panda's don't get very big and a 55 more than accomodate a herd of 15 - especially since cories aren't looking for separate hidey holes, they like one big cave to share.
I actually bought pandas from my lfs because they were half the price of the other cories they offered...I think they were less than $4 each. They are pretty cute!If you can't afford pandas, Peppered Cories are the cutest after pandas IMO.