CO2 Glass Aquarium Supply Accessories, CO2 Diffuser CO2 Drop Checker CO2 Bubble Counter Check Valve for Aquarium Planted Tank (Check Valve)

Ordered it just to have as a backup as it’s a very important component. Finally opened it today and it arrived broken. I am out of the return window so there’s nothing I can do except recommend that anyone who orders this to check their package immediately upon arrival. Giving it 3 stars because aside from that, it seems like good quality.

Very pleased with this little thing. It’s cute, and does the work. I soaked mine for 48 hours - and got it going from the first spin.I’ve read many comments here (even with positive reviews and ratings) - but totally misleading. Yes, it will ONLY work with pressurized CO2 tank and appropriate regulator valve. But working pressure is NOT 30-40-60 psi. Whoever wrote this - probably has no idea what he/she is talking about (unless it was a bad joke). 60 psi pressure would blow your tubing on every connection - not to mention a tender glass fixture which this diffuser is.I’ve got mine set up at 10 psi for ~2-2.5 bubbles per second (for my 55 gal heavily planted tank). Might increase it to 4 bubbles eventually - but since this diffuser produces perfectly fine bubbles (slightly larger than champagne) - CO2 dissolves in water much better than it did for me with previous diffuser (6 bubbles). Quantity of your bubbles will depend on resistance of ceramic disk of your diffuser (plus any in-line check valves etc).So don’t play (or risk) with pressure - count the bubbles on your bubble counter! And watch your in-tank CO2 checker.One note on pressure though - after you soak your diffuser and prime it initially - you’ll get bubbles out of only 2-3 spots on your disk. That’s when you want to carefully increase the pressure to about 20 psi - and then lower back it immediately. This “jump” will open up the pores and you’ll see bubbles coming out from many other areas of the disk on your diffuser. Good luck!

Simple clean look, suction cup has lasted over a year.

Works as it should

Artistic in apperance

If you’re using this for a co2 sistem don’t buy it

I purchased this to use with a Fluval CO2 cartridge system in a 10gal tank. The diffuser itself is still breaking in and although the entire surface of it isn't putting out bubbles, the small portion that is are the fine champagne bubbles I look for; So it is working fine and my CO2 checker still says it is getting enough CO2 into the tank. It also functions surprisingly well as a bubble counter but I have an external one for that.The suction cups are great and I haven't had any issue with them coming off or moving at all. The check valve is nothing special, it's just those .50c ones that do the job.My issue with this set is the U shape attachment. This was the kind of gimmick I purchased this set for originally so that it can hang perfectly over the rim of my tank. My issue is that the hoses continuously popped off of the connections on it and I didn't have extra hose so I zip tied them to it.The listing also doesn't mention the inner width of the U shape. The inner width is approx 15mm. So if you have a lip that is bigger than that, it won't sit on your tank.My advice is to get this set for the diffuser and just run one piece of hose instead of using the U shape and you'll be good to go.UPDATE: 2 weeks later this diffuser still doesn't let more than 1/4 of the air through the stone. I've tried everything to try and allow the full use of the stone but it doesn't work. The little bit of co2 that can come through is enough for my tank but it doesn't work how it is supposed to. Therefore, I am dropping this down to 1 star. I wouldn't bother getting this again at all.

I bought the swirly one and honestly think it looks beautiful. You can kinda use the last swirl as a bubble counter of sorts. I soaked mine in the tank the day before use. The stone puts off a decent amount of bubbles so I enjoy it. My only concern is I have found a bit of moisture in my airline tube. I know my tube doesn’t have a leak and I have a check valve so it shouldn’t be water. I’m just not quite sure how that’s happening. It might be totally unrelated to the defuser but thought I should mention it. Overall 8.9/10

The media could not be loaded.  pressure,but it's working DIY co2.nice product.good😊😍Iam happy.

Was not able to release bubbles through the diffuser. Considerable pressure was build up each time I tried which in the end instead led to leakage from connecting point from the tube and the diffuser. Replaced with a different diffuser and had no issues. This one goes in the bin..

This is my second co2 diffuser. Earlier I has steel diffuser which doesn't work well. This one is very nice and making very tiny co2 bubbles. I am satisfied with the product.

It is totally waste of money and time. There is no holes so not worked. I never recommend to use it.

Too brittle and does not wor even with high pressure