£27.99
£10.99
Replacement Ceramic Tube for 16/22mm Blizzard Inline AtomizerKey Facts
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Suitable for 16mm/22mm tubing (16mm internal / 22mm external). Click here for tubing size advice
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For aquariums up to 500L.
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Creates a mist of very fine bubbles.
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Excellent diffusion rates due to high surface area of small bubbles.
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Bubbles are in the flow of water as it enters the aquarium, so remain in suspension in the water for longer.
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Diffuser is located outside the aquarium which allows for easy maintenance.
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No equipment in the aquarium itself.
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Choose the size for your filter tubing.
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Requires 2 bar / 30 PSI pressure to function (provided by all CO2 Supermarket regulators).
Description
The Inline Atomizer CO2 Diffuser is arguably the most well known product used for CO2 diffusion, and is a firm favourite with planted aquarium specialists around the world. Designed for use with various filter size tubing, this CO2 diffuser sits inline between your filter and the filter outlet, ensuring that the CO2 has as much contact time with the water as possible.
The atomizer diffuser dissolves CO2 very efficiently, and provides a stream of very tiny bubbles which exit directly from the filter outlet. Because the bubbles are in the flow of current from the filter this ensure the bubbles remain in suspension for longer and further improves the level of diffusion.
Furthermore, because the diffuser is deployed outside the aquarium, maintenance is a very easy.
The atomizer diffuser dissolves CO2 very efficiently, and provides a stream of very tiny bubbles which exit directly from the filter outlet. Because the bubbles are in the flow of current from the filter this ensure the bubbles remain in suspension for longer and further improves the level of diffusion.
Furthermore, because the diffuser is deployed outside the aquarium, maintenance is a very easy.
Instructions
- Inline atomizers are to be installed on the return / outflow tubing from a filter as the water is reintroduced to the aquarium.
- Cut or replace your filter tubing with PVC tubing.
- Push tubing on to each end of the diffuser.
- Screw the retaining nuts back over the tubing to hold in place.
- Unscrew the small nut on the CO2 inlet.
- Feed CO2 tubing through the nut and onto the CO2 inlet.
- Tighten the nut onto the CO2 inlet to secure the tubing.
- Turn CO2 on, allow pressure to build within the diffser.
- Adjust dosing / bubble rate accordingly.
Customer Reviews
Average Rating
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Cory C.
17th Mar 2026The tiny bubbles it puts out are decent and mix well in the tank. However, getting a completely secure seal on my 16/22mm hose took some patience, with a few initial drips. Once it's all snug, it does its job of diffusing CO2 effectively. The tiny bubbles it puts out are decent and mix well in the tank. However, getting a completely secure seal on my 16/22mm hose took some patience, with a few initial drips. Once it's all snug, it does its job of diffusing CO2 effectively.
Reply from CO2 Supermarket
We're sorry to hear you had problems connecting it to your hosing. We recommend using PVC hosing as it provides a better fit than the ribbed-style tubing that comes with filters. -
John H.
15th Mar 2026Much more efficient than my old in-tank diffuser and I love that it keeps the tank looking clutter-free Much more efficient than my old in-tank diffuser and I love that it keeps the tank looking clutter-free -
Mike W.
13th Mar 2026This diffuser is great! Super fine bubbles and I'm using less CO2 than before. This diffuser is great! Super fine bubbles and I'm using less CO2 than before. -
Finlay R.
9th Mar 2026Fantastic diffuser! The bubbles are really small. Fantastic diffuser! The bubbles are really small. -
Paul H.
28th Dec 2025Great diffuser. Really fine mist of small bubbles produced. Seems a lot more efficient than the in-tank diffuser was using before and diffuser is now hidden below tank in sump. Great diffuser. Really fine mist of small bubbles produced. Seems a lot more efficient than the in-tank diffuser was using before and diffuser is now hidden below tank in sump. -
Ian W.
5th Nov 2025This is the best diffuser I've ever used, I can highly recommend it! This is the best diffuser I've ever used, I can highly recommend it! -
Len K.
22nd Oct 2025Easy to install and clean. CO2 diffusion seems efficient and I'm happy with the purchase. Easy to install and clean. CO2 diffusion seems efficient and I'm happy with the purchase. -
Jacqueline J.
8th Oct 2025It fit right on my 16/22mm hose and it's super handy to be able to clean it or just replace the ceramic tube. Really happy with the improved CO2 levels in my tank. It fit right on my 16/22mm hose and it's super handy to be able to clean it or just replace the ceramic tube. Really happy with the improved CO2 levels in my tank. -
Pete V.
2nd Aug 2025Works extremely well easy to fit great product Works extremely well easy to fit great product -
Jayesh L.
10th Jul 2025Solid build and great performance, definitely worth the purchase! Solid build and great performance, definitely worth the purchase!
