We are big fans of this tank. We used to have a 180g reef tank and got out of the hobby. We have bought 3 of these tanks (2- 9 gallons and 1- 15 gallon). These tanks are not loud if you keep the water level up as high as it should be. The pumps on all 3 of my tanks have been fine. Only con is we wish they came with heaters. Especially since they you can't always find the small fluval heaters locally. They are fully capable of growing live plants and of course will will grow algae in abundance if you leave the lights on high levels for long hours so research how long you should light your tank and add an air stone for oxygen and flow.

I set my tank up 2 months ago and the water would not clear. Used chemicals but still not clear. Algae would not go away. Filter stopped working. Unacceptable on a new tank! Threw that money down the drain.

The tank just leaked 9 gallons of water all over my kitchen. It is 3 months old, purchased from Petco. They only stand behind it for 30 days. Really disappointing.

Don't waste your money..aquarium looks great but pump did not even work right out the box. All my fish died. I heard alot on reviews about the pump but still went to buy it. If you buy this you might want to make sure it is about half this listed price because that's all it's worth.

I love the way it looks and the seperate area for your filter and heater. I just wish it came with the heater. I can't find one in store or at least the fluval heater and online it doesn't give me the option to buy it and have it delivered. I guess I'll have to settle for a different brand i know it's not a big deal just like to have things match when I can.

I bought this Fluval flex 9 about 2 months ago and it looks nice and is a good size. However unlike the Fluval betta tank it first does not come with a heater, and the filter does not have an adjustable flow rate. I bought this tank for a betta and I had to constantly have the filter unplugged because the flow was far too strong and the betta couldn't swim. More than once my betta stuck to the intake grate. This tank would be great for fish that like a higher flow rate but if you have a fish that is not a fast swimmer or has large flowing fins I would not recommend. You can adjust the direction of the water coming out of the filter, but only so much. Being able to adjust the filter strength like on other Fluval products would have made all the difference. This is really the first Fluval product that I've ever bought that I was disappointed in. Only getting 3 stars because there are some varieties of fish that may do well in this environment. For bettas I would give it 1 star

Loud! The filter is very Loud at night I have to unplug to sleep because I can hear it in my bedroom down the hall. The tank is pretty I contacted the company and they were no help. Fill the tank and test the pump before you add your decorations. The tank is planted and I don’t want to rebuild.

Great little tank.. nice room for filter media.. added another light and turned it into a saltwater nano 🪸 reef