I know I'm making myself out to be a total newb to aquariums , but the humble truth is -- I am one 
So I'm back for some more advice. The below links are photos of my new aquarium (120G)
I don't know much about filters so i need help Identifying what kind of filter mine is? I think it doubles as an Aerator with that tube sticking out-- i'm not sure. But if it is , then that's a problem as i want to grow plants in there . (nothing overly demanding , Java ferns , Anubias , Vals etc.) so if it is an aerator it'll won't leave much co2 for the plants ,right? Is there anyway i can disable it? or does this mean i have to change the filter all together?
Your assistance in this matter is greatly appreciated.
http://http://www.flickr.com/photos/44267830@N06/4068821941/
http://http://www.flickr.com/photos/44267830@N06/4069571674/
http://http://www.flickr.com/photos/44267830@N06/4069564964/

So I'm back for some more advice. The below links are photos of my new aquarium (120G)
I don't know much about filters so i need help Identifying what kind of filter mine is? I think it doubles as an Aerator with that tube sticking out-- i'm not sure. But if it is , then that's a problem as i want to grow plants in there . (nothing overly demanding , Java ferns , Anubias , Vals etc.) so if it is an aerator it'll won't leave much co2 for the plants ,right? Is there anyway i can disable it? or does this mean i have to change the filter all together?
Your assistance in this matter is greatly appreciated.
http://http://www.flickr.com/photos/44267830@N06/4068821941/
http://http://www.flickr.com/photos/44267830@N06/4069571674/
http://http://www.flickr.com/photos/44267830@N06/4069564964/