FILTER
This is by far the best filter that I have. I have had a few tanks, with all the filters now. In tank, over tank, and now the under gravel is tops to them all. The water is so much clearer, the fish seem much happier, and best of all, there is no need for all the wires everywhere. The only down side I can see is that each air tube needs a separate air pump to get the right amount of pressure to keep the clean tank. That is a lot better then two filters hanging on the back or in the tank taking up space with the air line. This only takes the air line. All three filters are taken in this one. BIO= the rocks on the bottom is collecting all the yuk stuff which is filtered out through the rocks removing all the extra stuff. Natural= the air through the tubes. CHEMICAL = the charcoal at the end of the tube where the clean water comes out. This is to assure that the water is of good clean and yuk free for the fish to enjoy. If you are a busy person, like me, this is the filter for you. Hook it up, feed the fish daily, and you are good to go for two weeks to four weeks. No more changing bags, or charcoal every other day, week, or whatever. Hook it up, you are done and on the go once again. I would buy this again for any size tank from a one gallon Beta Tank, ot a 150 gallon professional tank...
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