Fluval 206 External Filter for aquariums up to 200L

internal filter probs
i purchased a jewel fish tank 120 liters with internal filter had probs with the tank keep turning brown so bit the bullet and purchased the fluval 206 and have not looked back
Great filter but fiddly to fit
I bought this for my Juwel Rio 125 tank because the internal filtration system wasn't coping, my nitrate level was too high causing a bloom of green algae in the tank, despite water changes every 5 days. The Fluval external filter has solved my problem, nitrate levels down, algae is dieing back and water is crystal clear.It is a little fiddly to set up but worth the effort for the results it brings. If like me you own a Juwel tank you will need to make two cut outs on the edge of the cover flap nearest the back of the tank to allow the flap to close over the intake and outlet hoses. I did this using a 25mm wood drill and a jigsaw. There is a hole already in the flap with a plastic cover and I tried using that at first but the hoses would not sit right in the tank, plus if you do this you won't be able to remove the flap again for water changes.The other option of course is to do away with the rear flap and just have it covered with two. Once fitted and primed it seemed to take a while...
A huge improvement on the 205
This was purchased to replace my old 205 in my marine tank. This filter is simply the updated and improved version of the 205. The problems with perishing parts in the old 205 have been addressed with a change in the manufacture of the internal parts that are water bearing.

The Aquastop system is really nice, you can switch the water off and work on the filter without any spill. However it would be really nice to have a way of stopping the water in the hose as well for complete removal. Switching from the 205 to the 206 was... wet.

Operation is whisper quiet. The only thing I hear from my tank now is the soothing trickle of running water from the protein skimmer. I saw an immediate improvement in water quality and a die back of algae growth in the first few days, which suggests to me that this filter is working more efficiently than the 205, however don't neglect to change the carbon filter medium as it will become ineffective and eventually it will release all...
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