Eheim 2211 Questions

I have a Mini-L and a 2211. I think an adapter would be a poor choice.

I have this for outflow
http://www.adana-usa.com/index.php?main_page=product_info&cPath=65_67&products_id=368

and this for inlet
http://www.adana-usa.com/index.php?main_page=product_info&cPath=65_67&products_id=369

They're perfectly sized for the tubing and they provide the perfect flow for the tank-- not too strong, but they circulate water well over every cubic inch of the tank. If yo use an adapter to connect a larger 13mm outflow, you'll have much less of a stream coming out, though that may be what you want with a smaller tank. If it's anything larger than the Mini-S though, I would strongly advise against it. If you're using it on your 12long, I don't think this filter is going to do it for you-- there's been too many people who have reported having stagnant water on the opposite end of the tank, some even with a 2213 (unless they're using a spraybar across the *entire* tank).

Moral of the story: the larger a piece that you put on the end of the outflow, the less flow you're going to have. Stick with a small 9 or 10mm piece.

Yup, that's the direct replacement for the tubing on the outflow. Remember that the 2211 has a smaller outflow than on the intake, which is the 12/16 tubing. Also, 10ft is *way* too much tubing for this pump as the max head on it is 3'11".

I am using the stock tubing on those pipes. The tank is placed in the middle of a shelf though, so I had to run two 90 degree turns in order to get the lines to the tank. In order to do this, I used the stock 90 degree elbows that eheim makes for the 12mm line, but the 9mm elbows are hard right angles which would have been [censored][censored][censored][censored] for flow. I wound up getting some acrylic tubing from TAP and making my own soft elbows super cheap, and have left over stock for homemade lily pipes (which I already did with 12mm tubing-- not too hard.)

If you need elbows and other accessories/replacements for the 2211 they can be hard to find, but I've found that Trilby Tropicals has everything for that filter. Great people there too.

And yeah, a 2211 for a 5g is going to be a lot. You'll definitely have to throttle the output. You might even consider a Zoo-Med 501, as a 5G is the perfect size for that thing (and I'm generally not that fond of that filter).