Best External Filter?

[fiskkeeperpro]

Well I recieved a tetratec ex600 today for a rio 125, which was replacing my eheim classic 2213.

The difference is amazing, I know the flow rate is higher, but I find it runs quieter, and the water clarity is better (even when I put it on half flow- 300lph)

It also took about 20 minutes to set up, and priming was as easy as anything! I got the ex 600 as I already use the standard juwel 600lph and I have a koralia 2 on the tank (planted)

For a 180l tank, Id go for a tetratec ex 1200, they are so easy!

 

[danb]

I did have the internal filter for the same tank. Someone mentioned having 2x tetratec ex1200. This is severe overkill!! I have one running on this tank, and i woke up one morning to the filter creating waves in the tank. 1 will be ample. There is a link to a calculator where you can put dimensions, filter type and stocking and it will tell you if you are correctly filtrated. Cant find it now though