I use Tetra carbon filters on 2 of my aquariums all the time (only 3 filters every few weeks) and Revain offers by far the best price. BUT this time they shipped my filters in a UPS plastic bag - and the filter box was crumpled! Not sure what's up with that, but the filters were fine. When I called them to ask them not to send them in packages next time (I'm a subscriber and an existing customer) they apologized. Just take a look! But the product is great.
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