Fluval 307 Perfomance Canister Filter - for Aquariums Up to 70 Gallons - Aquarium Canister Filter

Outstanding Filter. Once my son got the o-ring on the right way due to my mistake, it primed up easily and has been working like a charm for 2 weeks. Before this we were changing the water 2-3 times a week. Right now the water is crystal clear. Tank just needs a light fishnet scooping for bigger debris but the filter is worth the investment.By the way we are running it for a rather large red eared slider in about 10 gallons of water.Will be getting another one for my own 40 gallon cichlid tank.

Love this filter. It’s the smaller version of the 407 filter. They are durable and well made. Very easy to clean with pull out stackable trays. Super quiet. Well worth the extra expense.

Works perfect! 5 minute setup. Lubing the outside of the hose ends where they go onto the pump head helps greatly when tightening their retaining nuts counter-clockwise (the instructions have this backwards, they say tighten nuts clockwise to secure hoses, which is not true). I used a small amount of cooking oil around the outside of each hose end to do so.Pump is quiet and powerful. Flow is adjustable. All new and leak-free.

Works as designed, awesome filter for my 40 gallon tank. Gives you plenty of trays for several media selections. Just make sure you place the rubber ring around the inner canal close to the motor housing and not the outer canal near the cap edge in order to prevent leakage.

This is my 4th Fluval filter for two 40 gallon tanks The first three were Fluval 207s. One is still working great, water is crystal clear and the little 207 is absolutely silent and it has been working for years. This recent purchase was my first 307. I did not have time to set it up initially. I installed it on Feb 28. It does not work at all as of today. The first time it stopped working was 72 hours after an uneventful set up, I came in and it was making a loud noise, the cannister was hot, and there was no output. I unplugged and opened. It looked perfect. I emptied the canister, plugged back in, and repeatedly used the manual pump. Eventually, it started up. A loud noise remained. The tank cleared up. This event has now reoccurred 4 times. But this AM, I could not get it going. So a 40 gallon tank is sitting with no filter and a good sized res. I got a 307 that is good for up to 70 gallons for a 40 gal tank becsuse I wanted to get a larger tank soon so I upgraded to a 307. I will now deal with customer service. If that goes well. I will remain a loyal Fluval customer. If not? No way would I risk getting in this situation again. I am unable to afford another filter not even a month after getting this one and the tank can also not remain unfiltered. This is not good.

Fit and finish and parts are great inside. Instructions not too bad. In my opinion, i think the tubing is a little bit hard to wrangle but it gets the job done. I like the adustible flow lever and its really easy to prime and start the siphon. I did quite a bit of reading and youtube watching before I made this purchase. I also know this filter is not a magic bullet to solve all problems.Here's my filtration setup:1 seachem tidal 55 stuffed with sponge.. why? additional flow, aireation, and purely mechanical filtration with some biological capability to break things down to nitrates, plus a good place to put filter floss of chemical media to absorb meds if needed. Also very quiet.1 Fluval 207 canister filter with a focus on biological filtration and enphasis on keeping water as clear as possible before moving over the bio media.The key to any canister filter is smart utilization of space. I will be 100% honest and say the bio media that comes with it is way too smooth and probably will not do a good job having enough surface area for groth of a good bacteria colony. For what its worth, if you do not try and optimize the potential surface area of the filter you are basically wasting your money. The goal is to have as much water touch as much of the media as possible. It's up to you to decide what bio media is good. But something that fills each tray and is very porous would be a good idea2nd thing to consider is how you intend to remove the fine particles from the water so your bio media does not get too gunked up. The prefilter on this thing is really nice but does take up a good chunk of space in the canister. That why I decided to use an extra HOB to take some of the burden off the canister and to maximize success. Plus in an emergency i could carry the tank for a few days with that HOB.Peronally I think the sponge in the first tray is too fine and that can affect flow and get clogged super easy. I decided to stuff with some more coarse sponge and leave just enough room for filter floss, though I might remove the floss alltogehter.The reason why I'm considering removing the floss is because I used an intake prefilter to help block some of those initial big particles even before they hit the quite generous prefilter area in the canister. I don't have a need to run any chemical filtration as of now unless i'm dosing meds or something else in the tank that will need to be removed later. So its good to save the bag of charcoal that came with the filter for later.To keep from making a mess when you release the red connector, just slightly lift SLOWLY and wait for the water to settle and you shouldn't have any spashing problems. Be mindful when you survice your filter, that grey lever for flow control is all that's keep your tank from dumping on the floor. But it is nice to have a permanent siphon if you need some tank water to clean your filter. :)In all fairness, this is a GREAT first time canister filter. just remember not to OVERSTOCK the tank or abuse the unit. Keep it clean on a regular basis. Check on your ammonia levels and keep up with your water changes. Also remember the advertized flow rate is without anything blocking the pump. Cut that value in half and then determine what capacity is right for you.

Nice product, this is a sweet little filter. Runs quietly, filters very nicely on my 20 long.