CO2 Supermarket Reviews 

500
TrustScore 4.5 out of 5

4.7

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Rated 5 out of 5 stars

The best company by far I've ever dealt with, the customer support was excellent and helped me pinpoint my issues and the delivery service to Glasgow was only one day from start to finish. The product... See more

Rated 5 out of 5 stars

After experiencing a catastrophic CO2 dump with a 10yr old single stage regulator, I was advised to replace the regulator, solenoid and needle valve as one item. I bought the dual stage regulator set... See more

Rated 5 out of 5 stars

The filling adapter for carbonated drinks machines works well. The tech help was great. I bought the wrong type of C02 which C02suppermarket identified as the problem straight away. You will need to... See more

Rated 5 out of 5 stars

Everything is working well with my co2 system and my aquarium plants are growing quickly. I had some queries during set up which Martin responded to quickly and sorted the problem. Great service.

Company details

  1. Animals & Pets

Information provided by various external sources

Leading suppliers of aquarium CO2 systems and equipment. We help people create beautiful planted tanks. Find us at http://www.co2supermarket.co.uk/


Contact info

4.7

Excellent

TrustScore 4.5 out of 5

500 reviews

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No recent history of asking for reviews

This company hasn't invited customers recently, so reviews may not be representative

Replied to 100% of negative reviews

Typically replies within 48 hours

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4.7

All reviews

(500)

73 reviews in the last 12 months

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Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Responsive & helpful team. Good products.

The team is responsive and helpful.

All of my aquarium CO2 accessories I get from them. They have been reliable.

It's the customer support that made the difference for me. I appreciate that.

March 28, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you for your review and your continued support, it's much appreciated.

Rated 5 out of 5 stars

Items well packaged was a fantastic…

Items well packaged was a fantastic turnaround too, nice touch with the how to videos it made it very easy to put together. Great customer service will do business again 10/10

March 7, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you for your review, Neil, we're pleased to hear you're happy with the products and service you received.

Rated 5 out of 5 stars

Absolutely brilliant customer service

Absolutely brilliant customer service. Really knowledgeable and genuinely helpful throughout. Took the time to give proper advice and went above and beyond what I expected. I’ll definitely be using them again and wouldn’t hesitate to recommend..

March 16, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you, Adam, it's much appreciated.

Rated 5 out of 5 stars

The Best Customer Service

Had a great experience with CO₂ Supermarket. Martin was really attentive from the start, he answered every question I had, explained everything clearly and helped me make the right choices for my setup. It made the whole process really straightforward.

Customer service was spot on throughout, and I’d definitely buy from them again. Highly recommended.

March 13, 2026
Unprompted review
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Reply from CO2 Supermarket

That's great to hear, Kevin, thank you for your custom and your review 👍

Rated 5 out of 5 stars

Being new to c02 I am bowled over by…

Being new to c02 I am bowled over by the support and quality of the system I have purchased..I will definitely be recommending c02 supermarket to everyone.

March 12, 2026
Unprompted review
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Reply from CO2 Supermarket

That's wonderful to hear, thank you so much!

Rated 5 out of 5 stars

Best customer suport ive ever encounterd

The customer support is the best i have recived in my life. That is not a understatement. They have incredibly kind, knowledgeable staff, and respond swiftly. Offer a lot of guidance and are incredibly polite. I have been asking a absurd amount of questions and always recive helpfull responses and suggestions.

February 17, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you so much for your review, Tuva, we're pleased to hear you're happy with the service you've received, and thank you also for your custom.

Rated 5 out of 5 stars

Great service

Great service, friendly and very efficient

Highly recommend to anyone, guided me through my first co2 set up perfectly

March 2, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you for your custom and for your review, Chris, we're pleased we could assist you.

Rated 5 out of 5 stars

Excellent

Excellent service i ordered my co2 system from here and its a great bit of kit I ordered as heard lots of good feedback from fish groups and forumns

February 22, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you for your custom and for your review, Richard. It's much appreciated, and we're pleased you're happy with your order.

Rated 1 out of 5 stars

Ordered the Mixer Reactor CO2 Diffuser

Ordered the Mixer Reactor CO2 Diffuser. Biggest pile of rubbish ever. The Fans had to be cut down and excess plastic removed, the rubber O-ring was hard and needed replacing, the push fittings are horrific and need to be glued, there are no fittings for it and to mount it externally you need you make your own bracket. After all fo that it still produces bubbles!! Binned it! Wrote a review and they are not publishing it. Seems they only publish the 4 and 5 star ones. BE AWARE OF THIS WHEN ORDERING FROM THEM. The products are not as good as described!

February 3, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you for your feedback, we are, however, sorry to read about your experience. To clarify your concern regarding our website reviews: we manually authorise all reviews to prevent spam, and yes, to reach out to customers to try to resolve problems, as quite often it is an installation or setup problem that can be easily resolved. We then ask the customer if they wish for their review to remain on the website as-is, or if they would like to amend or remove it. We will honour their wish.

As your review was submitted at 6pm on a Friday after we had closed, it simply hadn't been processed yet as we are closed over the weekend. Your Trustpilot review was then also posted during the weekend at 6pm on a Sunday, so all of this happened while we were closed during the weekend.

Your review went live first thing this morning (Monday) and we contacted you via email to address the problem you had experienced and offered assistance. Shortly after contacting you, we realised you had also submitted this one-star review on Trustpilot.

It is disappointing that you assumed the worst of us and submitted this review without even give us a chance to reply during business hours. It is especially disappointing given your history of being happy with our products previously - sadly, that counted for nothing in this instance.

Rated 5 out of 5 stars

Quality service

I don’t have a lot of space & I do have a sodastream subscription, so it was a no brainier when I came across this company. I email a question which was replied to on the same day! I know right!!!

The delivery was FAST. And everything fit. They had video links on how to fit each part for us newbies.

Quality materials & how service is supposed to be.

February 13, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you Vanessa, we're really pleased you're happy with the parts and service you received.

Rated 5 out of 5 stars

New co2 set up

Excellent website, made understanding my requirements very easy. The very helpful videos explaining how to use each item is a massive help.
My order arrived very quickly and very well packaged.
Overall, a brilliant company to buy from.

February 9, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you very much, Darren, we're pleased you're happy with your order

Rated 5 out of 5 stars

I’ve been running a nano co2 system…

I’ve been running a nano co2 system from CO2 Suppermarket for two years and it would be fair to say that the improvement in plant growth has been really impressive. Easy to use and reliable. Last week I had an unexpected leak and submitted an enquiry as to what the problem might be. I had a prompt personal response which reassured me that issue was not down to the equipment. Situation resolved.
Thank you CO2 supermarket

February 13, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you, Adrian, I'm pleased to hear you're happy with your purchase and we were able to resolve the problem you had lately and to your satisfaction.

Rated 5 out of 5 stars

Great company

I was looking to purchase a CO2 kit
&I was glad I chose CO2 Supermarket ,
There kits are easy to set up & when I needed any advice they were quick to respond , they would even email me to check if I needed any more help

February 7, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you, Brian, we're glad to be of service and your custom is much appreciated 👍

Rated 5 out of 5 stars

Wouldn't get a Co2 system anywhere else

Great customer service, fast response to enquiry. Package arrived fast and well packed, no complaints. Co2 is working well, and the instructions were very helpful , it made my experience as a beginner with a Co2 system straightforward.

February 6, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you so much for your review, Abi!

Rated 5 out of 5 stars

Top service from co2 Supermarket

Top service from co2 Supermarket. Very high quality product and full instructions and videos on how to setup the system. I will be using them again in the future.

February 10, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you very much for your review, Brian, it's much appreciated!

Rated 5 out of 5 stars

CO2 Regulator Set Up

This was my first experience of delving into CO2 and the level of support, guidance and all around help from Martin was nothing short of exceptional. Martin could not have done more to ensure my set up was correct - he followed up to ensure that I was having no further issues and offered his support whenever required. I can without doubt recommended CO2 Supermarket - just all around excellent service!

January 23, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you so much for order and for your review, David, that's so kind of you to say and it was a pleasure to be of service.

Rated 5 out of 5 stars

Superb customer service

Superb customer service. I was very surprised to receive a response to my enquiry given that I first raised it late on a Saturday. I received a further response on the following day too, and useful responses at that.

Advice/recommendation was bang on.

Order was shipped complete with some additional sealing washers that the supplier thought would be useful (and they didn't charge for).

Products are good and as expected.

Would I buy from them again? Yes, absolutely.

January 18, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you so much for your review, Kingsley, that's really great to hear and thank you for your custom, it's much appreciated.

Rated 5 out of 5 stars

Great customer service

Great customer service, all my questions were answered fast and in full with clear advice.
Prompt delivery also

January 15, 2026
Unprompted review
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Reply from CO2 Supermarket

Thank you for your review, Dave, it's much appreciated!

Rated 4 out of 5 stars

Really good experience

Really good experience, the only thing I'd improve would be the tracking. Mine went from in-progress to being delivered today without anything in-between. Otherwise I'm very pleased with what I ordered and had no issues, would purchase from again readily.

January 6, 2026
Unprompted review
CO2 Supermarket logo

Reply from CO2 Supermarket

Thank you for your review, it's much appreciated.

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