thanks for the advice.

you say get one for more water that is in my set up. I have a 20 gal. but im only goin to fill maybe 1/3 of it with water(its not very tall, just long). So if get a 20 gal filter that should be sufficient since it will be pumping much less water than what its for right? Is that what you ment by that? do correct me if im mistaken. thanks again for the advice.