Planted Tank Guru
Join Date: Jul 2013
Location: south eastern PA
Not trying to be a Negative Nancy but the bushy nose isn't a good idea in that small of a tank. Even as one of the smaller pleco breeds they are better kept in 20-30 gallons. They make huge bio-loads (poop monsters) and can take a lot of work cleaning up after in tanks too small for them. With the pygmy corys the pleco is redundant, so I'd recommend giving it back to the breeder or to a LFS for credit maybe.
Speaking from experience with pleco's, I have a leopard sailfin that's in a tank too small for its adult size (still has a lot of growing to do) and am doing daily poop remove to keep the nitrates down and the tank looking decent. Fortunately he'll be moving into a larger tank soon (99% cycled) but honestly I'd say remove the pleco and enjoy the corys, but that's just my suggestion.