ROYAL PLECO: Do's & Don'ts?
 

I purchased a nicely discounted Royal Pleco (USD$17)
at my LFS. I have put this 4-5 cm long catfish in my 2-feet
tank together with a Discus and an SAE. I was wondering
if this is OK for a temporary period (I heard this baby
may grow to a 30-40cm monster).
My tank is a medium planted (Hygro & Lotus) with
DIY CO2 injection.

Any advise will be greatly appreciated