CO2 Diffuser for Aquarium, Excellent CO2 Solubility Ensuring Vigorous Plants (20Dx350L)

This is my first time using c02, and this diffuser works great for my application; I have a 32 gal tank, with snails and fish. Instructions say to soak for three hours but it was at least 24 hours before I could get back to it after hanging it in the tank. After completing setup I turned it on and....voila!! Tiny bubbles! The instructions stated initially bubbles would be big but would settle down after a couple of days to tiny bubbles. I think the extra soak time probably prevented that situation. The only problem I have with this diffuser is the shape. I liked the look of the long neck with hook at the top but it doesn’t fit over the edge of my tank very well. My tank is Bio Cube and we’ve removed the hood and placed a Finnex LED light on the open top. The rim where the hood closed is pretty thick, and the hook of the diffuser isn’t wide enough to fit easily. It doesn’t bend easily and would possibly break if forced. I’ll use it until I get a different one, and will keep it for rimless tank setup later on. It does work well!

My local independent aquarium supply house had a similar item but not as long (deep) so I had to find this online. My aquarium is 24 inches high and it is important to get the CO2 diffuser as far down in the tank as possible so the tiny CO2 bubbles get dissolved in the water before reaching the surface. This item works well with my new beer keg regulator and CO2 tubing. I can see the small bubbles coming out of the diffuser disc like it is supposed to. My one complaint about the seller is that they need to offer replacement discs at a reasonable price. I was able to buy a ten pack for about twelve dollars from a different seller on Amazon that fit this unit perfectly. I like to change out the discs when I clean the aquarium and clean them with a mild solution of bleach and water then rinse them and dry them for use another time. Would I buy it again ? Yes. I think it's a very good product that is attractive and WORKS properly.

Compared to all of the other diffusers I used, this is my favorite so far. The quality is great, really sturdy/solid and beautifully designed. I did not have to worry about putting on the CO2 tubing (the black rigid kind) and breaking the diffuser like some of the ones that are made out of glass. The bubbles are fine and evenly dispersed (some of my other diffusers have various size bubbles coming out of the ceramic membrane). No cheap plastic suction cup to hold the diffuser in place either. This works well with my rimless tank, but on my larger braced tank, I had to cut a small piece from the aquarium bracing for the diffuser. This is because the curve at the top of the diffuser can only support 1/2 and my aquarium + brace is 3/4 inch. Cleaning the diffuser is easy, just unscrew the top and clean the ceramic membrane without worrying about breaking anything.

I swapped this out for the one that came with the fluval mini 20g diffusor and it works great! I followed the instructions of tightening it and then letting it sit for 3 hours in the water and when I turned it on presto everything was up and running! Tiny little bubbles came out and moved around the tank! This is my first planted aquarium so I'm loving the price and simplicity of this bad boy! Does anyone know how long the tanks will last roughly?

I love that this isn't glass, it's stainless steel. My first one I soaked for 7 or 8bhours before I hooked it up and although I got some fine mist from it, there were too many large bubbles for me. I contacted the vendor who sent a new one out immediately. I works perfectly. The only thing I don't like is it doesnt fit over the frame of my tank. I didn't want to "cut" a notch in it because I didn't want bits of plastic getting into my tank. I used a soldering pen to melt a spot just big enough for it to fit in.

I bought this due to the feature of being able to clean it without a hassle. I actually like this, not only does it look good, the bubbles are all uniform and small, which is the best way to inject co2 making it more disolved. I would suggest this to anyone looking for a difusor. I would suggest you use a airline holder/suction cup to hold it in place, the attatchment is to narrow for a standard rim in any fish tank.

The diffuser seemed to be in good condition upon opening the package. However, with pressurized CO2, even the smallest gap or defect in the tubing, diffuser, valves, etc. will result in the CO2 leaking. It took me about 15 minutes to install the diffuser with my system and upon switching it on, there were giant bubbles coming out of the metal tube just below the ceramic disk. Upon closer inspection, I saw a tiny scratch in the metal, which seemed to just slightly perforate the tube. This was enough for all of the CO2 to leak out as big bubbles and not be diffused by the disk, making the product completely useless. You should test your products before shipping them.

Perhaps I got a bum ceramic disk, but I'm still seeing large bubbles break through on occasion. Maybe I'll try to install a replacement disk and see if that helps. The mounting clip stays in place and the stainless steel design is great. Don't try to use this one on a yeast (DIY) CO2 maker. I would guess the unit requires 30 psi to push through the ceramic disk.