I am looking into getting either the Eheim 2215 or 2224 canister filters but am wondering which will do a better job at filtering the water. The 2215 takes in water from the bottom and forces it through the layers of media and out through the top, however the 2224 takes water in from the top is there a chance the 2224 can bypass the filter media or is the 2215 just a better filter because of what i just mentioned?