Fluval FX4 Canister Filter

“I am running two fx4's on my 135g...I run the standard foam blocks on the sides of the media trays in each of the canisters.”

“I have an FX4 and FX6 on fresh water tanks and I do not see any reason they would not work. I am very impressed however not sure if inexpensive is the best way to describe them.”

“I have just bought a FX4 and the humming is pretty loud and is very annoying in a 40sqm room. I tried everything I could, to no avail, I am even thinking sending it back, don't buy”

“I run an FX4 on my 90g. Nitrate factory? Don't know. I vodka dose, so never been an issue.”

“had to settle with an FX4 which is much quieter compared to the FX6. There's still the normal hum but you're talking around 45dB vs 60+dB as measured next to the motor with a dB meter app.”

“I had an FX4 on my freshwater 75 gallons and it was a pain to do maintenance on. I kept it just in case but I really hate it.”

“The FX4 first, last year after about 8 months of use the motor died on it.”

“Also have an FX4 (as Tanks and Plants is WELL aware since we have been talking about it for days lol) but it is DEAD SILENT, I am not kidding, its much quieter than my 306”

“My old FX4 filter is very quiet but I've made several modifications to it.”

“FX filters have performed flawlessly for me for over 15 yrs. A consideration regarding the big ones is cleaning time. Very heavy. The 4's are much easier to handle.”

“I use an FX4 on my 75 gallon, I would use an FX6 if I could fit it. I really like how easy it is to use and the multiple tray levels allows you freedom to add or remove media you want or don't want.”

“I've got both a fluval fx4 and fx6. Both do the job. I can clean the fx4 and have it back running in ten minutes. Do that once a week and you're golden.”

“I use a Fluval FX4 on my 48"x24"x18" tank, as didn't have the space under the tank for a sump. It's been running for two years and has been great.”

“I'm going to be running 2 FX4 canister filters on it. Why?? Because those are what I used when I had my freshwater tank going.”

“I have been using an FX4 on a 75 gallon for two years now...I clean my filter and change my media every 4 to 6 weeks.”

“I have an FX4 on my 75 gallon aquarium and it not only has been doing great, it makes water changes extremely easy.”

“I'm running an FX4 on a 46 Bow front and it's been great. Tank is crystal clear and numbers are perfect.”

“Run fx4 on my reef the maintenance is easy. It's large so easy to change media and clean. I love mine.”

“I have a FX4 and 406 on my 75 gallon planted and it's fine. The FX4 alone would be more than enough”

“I use a Fluval FX4 on my 48"x24"x18" tank...It's been running for two years and has been great.”

“I have been running an FX4 on my 125 gallon for about 3 months. I couldn't be happier.”

“I would have went with a FX4 or 6 if I had the space.”

“I have the FX4 and so far it's been doing well.”

“I use the FX-4 and I don't hear anything.”