Hi I have had an Eheim Ecco 80 gallon filter for about 1.5 years (best filter I have ever had!), these filter pads fit perfectly and last great (it depends of course Depends if I have a 33 gallon reef tank with 6 small to medium sized fish in it, changing those filter pads about every 2 months keeps the water nice and clean and yes they do fill up with "garbage" but so I change them ! Expensive, but worth it, also Made in Germany. :)
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