Rated 4.3 out of 5 by 6
Rated 1 out of 5 by Sumie 306 AND 406 Problems, Problems, and MORE Problems!!
I started with a 306 which works great at first, the rapid filtering and water flow are incredible to watch but this filter quickly developed water flow issues (it slows to a pathetic trickle) that are impossible to fully resolve. I upgraded to a 406 because perhaps I just need more kick for my heavily planted tank and that was the ONLY thing I hadn't tried and had the exact same issues. I've been researching, cleaning, replacing parts, crying, recleaning, cussing, and troubleshooting this problem for nearly two years with no results. I cannot stress how much headache and hassle this filter is! This filter, both 306 and 406, is junk. I will never buy this brand again!
If you don't have this problem GREAT good for you some people never have these issues but if you pay attention most of them are using the old '05 series not these newer '06's, apparently it's Russian Roulette if this problem will develop for you and it doesn't go away once it starts so if you are considering buying this filter don't take my word for it but I highly suggest visiting a hobbyist forum and asking for recommendations or input first.
June 28, 2016
Rated 5 out of 5
by Julia123 Very good
I have had this filter for almost a month now and it's great. The water is crystal clear. I have two goldfish and this filter has the power to keep the water so clear no matter what they do.
It took a few days for the water to clear up when I first hooked it up. I think it has something to do with bacteria. So don't get discouraged on the first day when you don't see improvement.
January 1, 2016
Rated 5 out of 5 by Fedfire A major upgrade from power head filters
I purchased the Fluval 306 to upgrade my filtration system on my 36 gallon bow front cichkid tank. I was using two bio wheel filters which worked very well but I got tired of the filter changes so often. The 306 is overkill for my tank but you can gate down the valve if you need to. This filter pump is amazingly powerful and extremely quiet. I have it in the cabinet under the tank and I can't even hear it. You can also see debris get sucked into the strainer and it disappears instantly. Within 24 hours, my tank was cleaner than it ever has been. Absolutely crystal clear. Very satisfied with this purchase.
December 13, 2015
Rated 5 out of 5 by n919 Awesome!
I have had this 306 for over a year and I would have to say it works the best then any other canister filter that I have owned. Since then, I now have 4 Fluval canister filters on all 4 of my tanks. Ranging form the 106 to the 406. I know the price is a bit higher then some other filters but worth the cost!
March 14, 2015