Fluval 406 Vs Fluval Fx4 Vs Fluval G3

Which one is the best out of those or similar fluval lines for a 40 gallon tank?

The g3 has "performance monitor" and is more technological?

It looks like the fx4 is the best though, right?

I don't think the g3 has good mechanical filtration?

 

The FX4 is overkill for a 40 gal tank, since it puts out 700 GPH.

I've never used the G3, but I have an older model of the 406 (405) on my 44 gal and I love it.

 

I love the Fluval canisters. Easy to clean and very quiet. Very low maintenance. I have a 406 on a 65gal a 206 on a 29gal a 306 plus a hob on another 65gal and a FX6 on a 125gal. Cleaning and maintenance would be easier on the 306 or 406. The 306 is rated for 70gal so would be fine for a 40g. But I like to over filter so if I had the room I might go with the 406. It is rated for 100g

 

I wouldn't trust the rating for tank volume. Look at GPH instead - you want around 5x the volume of the tank for GPH.

 

I wouldn't trust the rating for tank volume. Look at GPH instead - you want around 5x the volume of the tank for GPH.

The Fluval 306 does 303 US GPH. That is 7.5x the volume of the tank. So it should be enough but again I would use the 406 if I had room because I prefer to have as much filtration as I can

 

Just saying that for some canisters, the tank volume rating doesn't match the ~5x volume rule, so just keep an eye on that when selecting canisters

 

I have a FX4 for my 90g tank, I really like it. Easy to set up and there’s no priming.

The Fuval G3, last week I posted asking people here what they thought of it. Didn’t get a single answer, except the “bump”.

 

I just opened an Fx4, mothers day present. Had to chuckle cause it's almost as big as my pool pump. Lol The intake would take up a good portion of a 40g. IMO

 

I have an FX4 on my 55. It's a great filter but I don't think I would put one on a smaller tank.

 

I have a FX4 and 406 on my 75 gallon and a 306 on my 40b. I think the 306 is perfect for a 40b. I thought about moving my 406 to the 40b after running it with my FX4 for a few months but didn't see the need for more filtration so I left everything as is. I also have a 206 on a 20 gallon long.

I looked at the G3 and G6 but didn't see the benefits of the electronic nannies for the price. The mechanical access is pretty cool though.

 

Just saying that for some canisters, the tank volume rating doesn't match the ~5x volume rule, so just keep an eye on that when selecting canisters

Some are junk that's for sure.