Works as it should but could look better. My aquarium is tall but rather narrow. I had a bubbler on one end and a filter as far as it went, but it still sucked in air bubbles and then lost the vacuum and started running loudly, pumping out tiny air bubbles. I bought this as a fairly cheap solution. The filter inlet is now much closer to the gravel, still close to the bubbler but at the point where all the bubbles are closer together. I no longer have the vacuum loss problem. So it got better and everything works as it should. But the part that attaches this extension to the existing filter inlet is cut at an angle and is clear/milky white and very visible. It should be small and black so that everything fits together well. It's just a huge piece of thick-walled pipe. This part isn't shown on Revain, but it's ugly. The tube holds everything in place and there aren't any major issues, but the aesthetics could be better.
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