Aquarium Inline Co2 Atomizer Diffuser for Planted Aquarium

I wanted to get my diffuser out of my small aquarium bc space is at a premium. Figured I would try an inline. I had to heat and stretch the tubing to fit over these 1/2" barbs, so I was skeptical if it would work. First install went well, but when I kicked it on the bubbles were gigantic. Took it apart, soaked the ceramic for an hour, and tightened it back down. Was much better with the random big bubble still. One day later, and it's all very fine bubbles now. It's unseen when standing anywhere that isn't right in front of the tank. Ended up needing to turn down my psi and ever so slightly raise bps. Great bright green on my drop checker and couldn't be happier with the product so far. Wanted to post this in case anyone is unhappy right away or doubting if it can be adapted. Could be faulty, but let it settle for a day or two before you get anxious. Will update if it breaks or something.

Have this inline with a Fluvial 407 and works perfect! if you have a 400 series don't forget the rubber adapters you will need to hook it up.

Diffuser appears well made and is quite compact. The only issue I had was that my 12/16 eheim tubing would not fit into the screw caps. This is probably because the tubing is somewhat old and not as pliable as new. I finally just used hose clamps to secure tubing. Seems to atomize the CO2 quite well

Fits the co2art atomizer diffuser perfectly. I noticed an immediate difference switching out the dirty membrane with this.

I bought this in-line CO2 Diffuser after reading many positive reviews on Amazon Prime and a few aquarium blogs. I purchased the 16-22mm version which I'm using with 5/8" ID OASE canister tubing. The 5/8" ID tubing fit on the diffuser perfectly. I placed the 5/8" tubing in hot water for 15 seconds to help get it on the two diffuser fittings...but I think I could've gotten it on without doing that. As mentioned in other reviews, the two included grey locking screw-down nuts will NOT fit over the tubing once on the diffuser, so I used #6 stainless steel hose clamps instead, which I prefer anyway. I used black CO2-proof 3/16" ID rigid tubing for the CO2 line purchased on Amazon Prime which worked great. I heated that too because that CO2 tubing is VERY rigid, much like RO/DI tubing. I run the CO2 feed pressure at about 40 PSI, but I'm sure it'll work just fine at a lesser pressure. The diffuser produces very fine bubble barely visible coming out my aquarium spray bar, which is FAR superior to the in-tank ceramic CO2 diffuser I was using previously. This provides MUCH better CO2 distribution throughout the tank. And no more foamy mess on the surface! All my plants seem to be doing great and growing like mad. It's made of both metal and plastic with VERY sturdy construction. I give this in-line diffuser my strongest recommendation…worth every penny.

Have it installed inline on my 407. Noticed it weeping slightly this morning from the seams. Removing it tomorrow and buying the real version. This is brittle plastic.

is it a knockoff? maybe. does it work excellent? yes.

Working great so far, no issues.You need size 16/22 hose