Is it possible to have to much bio-load? I currently have a 55 gal
setup using 2 ehiems (2015) 1 is complety full of media and the 2nd
half full of media and mesh filter.

I'm also using a Bac-Pack II skimmer which also uses some mesh in the
resivor?

The best part is my test results for ammonia 0% Nitrate 0% Nitrite
0%. I have had 0% nitrate for going on almost 3 weeks now. Thats a
good thing.

What I want to do now is put maybe 15-20 lbs live rock, would this be
over kill on the bio-load? I would think is all a good thing.