“It is ugly and the inlet feels way too big.”

74% of 19 verified owners recommend the Fluval 407 Performance Canister Filter, based on real owner verdicts aggregated from Reddit, enthusiast forums, and YouTube.
The headline score reflects owners (Reddit, enthusiast forums), independent lab tests, blogs with no affiliate links, and YouTube owner-comments when they line up with owners. is shown for perspective but kept out here — hover the i for why.
Synthesized from what Fluval 407 Performance Canister Filter owners say — not a spec sheet.
“It is ugly and the inlet feels way too big.”
“Did own a fluval407, real quiet filter with lots of potential.”
“I do not recommend the Fluval simply due to their aqua-stop valve being poorly made and their clamps that hold the top down are not ideal either.”
“mine is also a right pain to restart and the priming handle doesn't seem to do much.”
“This is the filter I use. I love it.”
“if still no improvement I'm moving on from fluval as my second hand 307 isn't much better”
“When I ran 4 series they were always a pain to restart.”
“got Fluval407 is running perfectly!!”
“I use the fluval 407 in my 100gal also. I haven’t touched it in almost 2 years. Crystal clear water, no issues whatsoever, and tank thriving.”
“I run a 407 with my 120 gallon and the filter itself is like 6 yr old now never had an issue”
“i have one, i like it. i’ve owned several fluval canisters and this one is my favorite.”
“I have a 407 on a 150 liter. The capacity is amazing peace of mind”
“the fluvals are just way easier to deal with and much better flow”
“Loving my 407, first canister filter I’ve owned. It’s very quiet.”
“I have a 407 on my 75 and an FX6 on my 125. Both are amazing!!”
“I have a 407 for our 100G and it works pretty good.”
“Presently have the fluval 407 and much prefer it.”
“407 on a 200l tank here and I just love it”
“Great filters.”
Practical notes owners raise — setup, quirks, and issues to watch for. They don't say whether the person likes the product, so they're not counted in the score, but they inform the pros, cons, and who it's for.
“Extra info...They are in a 75gal fully cycled etc. using a Fluval407 with a spray bar facing the back of the tank to minimize flow and they also have two air stones. I'm currently cycling out the black sand so don't come at me please. I don't want to take it all out at once and have a cycle crash.”
“It's a Fluval 407 Performance Canister Filter we bought it at Pet Smart.”
“And #2 it takes up space in the filter where instead you could have more bioballs and some foam etc which is always great to have more of. My fluval407 is filled with nothing but sponges and bioballs and the likes... I'm only 3 yrs in, but from what I've read, that is how most successful aquarist do it.”
“Fluval 407 Performance Canister Filter. Have not added any substrate at the bottom since upgraded to the bigger tank. Only the turtle, filter and her platform.”
“And this is the canister filter I use, I have a 75 gallon tank so depending on your tank size you could get the smaller version https://www.petsmart.com/fish/filters-and-pumps/filters/fluval-407-performance-canister-filter-5290152.html”
“The whole thing was valued over $825. All I needed to do was get a high powered water heater ($50), get new media for the filter (about $70 total), added some decorations (about $100 total) as I already had my turtle topper, and the whole upgrade was about $370.”
“I have both the FX4 and 407. My personal opinion is that the FX4 works best in 6ft long tanks, unless you need strong water flow. It's very powerful. The 407 is suitable for a tank that size.”
“https://preview.redd.it/very4q2chsuf1.png?width=1080&format=png&auto=webp&s=a720405581311211f1266531959a13118e558697 I did a hose swap on this 407”
“really easy. considering you have a sink or bathtub available. the hoses have a quick release lever so the water cuts off instantly when removing.”
“Aynısını yaşıyordum. Emiş borusu tıkanmış temizleyince tekrar canavar oldu. Akvaryumda patlayan tds için neler neler yaptım meğer sorun buymuş”
“I am having this issue currently. Just read your post. I think it’s from having slag in the hose. I have mine filter up on table I built and it makes slag in the hoses . If I hold the filter off and below the table it stops.”
“If flow is strong let it ride. Won’t hurt but some filter bags dissolve over time. At least the fluval 407 canister filtration bag have.”
“I never figured out personally what was going on, but I moved a few months ago and when I set up the filter at my new place it stopped doing this. No idea what changed but might be worth moving the placement around or something, I dunno, lol.”
“I have Fluval 407 too, just clean the foam to remove the big debris. When you siphon clean the gravel, drain it in bucket, then open your canister, pull out the foam cartridge only, take out the foam and wash it in the bucket with the aquarium water.”
“I have two sponge filters and the Fluval 407 canister, so ordering purigen now! Thank you :)”
“Sounds like air/air bubbles in the canister. You may need to open it up and add more water or turn it off and reprime. You shouldn't have that trickling water sound. If you just have that offgasing noise, it can be caused by air bubbles and will often dissipate over time.”
“I agree, I run fluval 407s on most of the tanks, they range from 20g to 75g, and for the larger ones, I have FX6's. Dont get me wrong though, ive used sponges and got very good results throughout my fish keeping journey. Personally, I really like the options a canister filter gives you.”
“I just got a 75 with a fluval 407. Spray bar is not included.”
“I’ve switched the hoses out, no different, it’s so strange”
“Also checking in on this, I’m having this issue”