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Title: Still the best!
Review: I was in the tropical fish hobby for about 30 years. Got out of it for about 5 years. The one key componet for me all along before was the diatom filter so when I got back into the hobby I found I was having clear water issues. I bought the diatom filter once again and perfectly clear water in the tank is back again. It even keeps up with a 55 gallon tank I have 4 10-12" messy goldfish in! The one design issue problem is putting the filter down in the bottle, if you are not careful, the top of the filter will hang up on the top of the bottle lip when you screw the lid on, this will give you a vacuum gap and the system will not work. Other than that, this is an old technological device that works great today, a must have!
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