£18.99
Flat-Bottom Glass CO2 Diffuser - Extra Large for Aquariums up to 500LKey Facts
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For aquariums up to 500L
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Ceramic disc diameter: 5cm
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Height: 3cm
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Made of Glass and Ceramic.
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Excellent CO2 diffusion rate.
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Easy installation.
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Suction cup included.
Description
This flat-bottomed glass CO2 pollen diffuser produces a fine mist of CO2 bubbles which improves CO2 diffusion in the aquarium water. Its extra large size makes it suited for aquariums up to 500L.
Instructions
- Because the item is made from glass it is inherently delicate, and extra care needs to be taken when fitting it in the aquarium. It is highly recommended that the tubing is first warmed in freshly boiled water to soften the tip when pushing onto the diffuser inlet.
- Position just above substrate below the filter outflow. This will ensure the bubbles enter the flow of water from the filter and hold the CO2 in suspension for longer, increasing CO2 diffusion levels.
Customer Reviews
Average Rating
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Roddy G.
17th May 2025After connecting the diffuser I noticed that all the bubbles were coming from one point between the plastic and the ceramic , they were big bubbles and clearly there was a break in the seal. I submitted a video and explained this , the reply was that my CO2 was on a low setting , I took matters on my own hands and applied some super glue around the edges which fixed the problem . that been said I read more... After connecting the diffuser I noticed that all the bubbles were coming from one point between the plastic and the ceramic , they were big bubbles and clearly there was a break in the seal. I submitted a video and explained this , the reply was that my CO2 was on a low setting , I took matters on my own hands and applied some super glue around the edges which fixed the problem . that been said I found the reply dismissive
Reply from CO2 Supermarket
We're sorry to hear about your experience and that our initial response came across as dismissive - that was certainly not our intention. If you felt the issue remained unresolved, please know you were welcome to continue the conversation, and we would have been more than happy to assist further. We appreciate your feedback and are glad you were able to find a solution. -
Jasper M.
22nd Apr 2025This diffuser is fantastic! It looks great and the CO2 bubbles are tiny, so they dissolve quickly. My plants are loving it, and it was a breeze to set up. Highly recommended. This diffuser is fantastic! It looks great and the CO2 bubbles are tiny, so they dissolve quickly. My plants are loving it, and it was a breeze to set up. Highly recommended. -
Sean B.
26th Mar 2025Works well, fast delivery too Works well, fast delivery too -
Terry T.
9th Feb 2025It not looks stunning in my large aquarium, but it also works like a charm, creating a beautiful mist of fine CO2 bubbles. It not looks stunning in my large aquarium, but it also works like a charm, creating a beautiful mist of fine CO2 bubbles. -
Steve
24th Dec 2023Works fine well made Works fine well made -
Paul C.
5th Sep 2023Very nicely made and looks great in my tank Very nicely made and looks great in my tank -
Robert S.
23rd Sep 2022To be honest I was received damaged but they send a new one very quickly. Great diffuser, now works great. Very good service and contact !!! I recommend! To be honest I was received damaged but they send a new one very quickly. Great diffuser, now works great. Very good service and contact !!! I recommend! -
Brenden D.
19th Jun 2022The first one had a bit of a chip out of the ceramic which was causing all the gas to escape from that one spot, I contacted support who asked me to send a video to show the problem, which I did, and they sent a replacement that arrived the next day. Not their fault and dealt with the situation well. The first one had a bit of a chip out of the ceramic which was causing all the gas to escape from that one spot, I contacted support who asked me to send a video to show the problem, which I did, and they sent a replacement that arrived the next day. Not their fault and dealt with the situation well. -
Angeliqa M.
9th Oct 2021Good price and nice in the aquarium. Good price and nice in the aquarium. -
Graham .
14th Feb 2021Good and heavy works well Good and heavy works well
