12-18-2004, 11:35 PM
Join Date: Feb 2003
Brad, I currently have a 2215 and 2217 canister filters in my 125 gallon set-up. Not only does it increase filtration capacity and turn over, but also increases circulation so there are fewer dead zones or areas of low circulation. A trick I like to use is to saw off the end of the rigid return line then reattach it using a piece of green tubing, then you can change the direction of the outflow however you like. Also, you can alternate maintaining either filter so you don't run as big a risk of losing a lot of your biological capacity at one time.
I have an Eheim "Professional" model with the internal heater and I don't like it in the least. Not only do you have three cords to drag along with you when you maintain your filter, but the internal media containers, or baskets, won't allow for easy use of filter floss or carbon and, if you use the Ehfimech media on the bottom, your Ehfisubtrat biological media gets even more clogged and faster. Those pads also didn't work very effectively and got clogged quickly; much more quickly than with a heap of filter floss. You can always hide a heater in a larger tank.
So, for more bang for the buck, I'd go with two 2217s. For a digital temp read out, use a digital Big Temp Alert by Lifegard, which monitors the room temp. as well to help regulate the tank temp in the summer and winter by opening a window if needed.
These are just some of my experiences I wanted to share so you can make an informed decision, YMMV though.