Aquarium Co-Op CO2 Regulator

NOTE: This product is no longer being sold.
For existing customers, view this page for product support information, and contact Customer Service with any warranty issues.

Dual stage CO2 regulator
Precision needle valve and bubble counter
Expandable manifold for up to 6 aquariums
1-year, hassle-free Aquarium Co-Op warranty

Grow aquatic plants faster by injecting pressurized carbon dioxide in your planted aquarium. Using the Aquarium Co-Op CO2 regulator will ensure a steady and reliable release of CO2 gas as it features a dual stage design. The two easy-to-read gauges show both tank volume and working pressure. Included is a bubble counter for easy adjustments of CO2 levels as well as a solenoid valve which can be plugged into a timer for precise timing of CO2 release.

Multiple manifold blocks can be added to this regulator to expand your CO2 system to multiple aquariums at once. Each manifold block features its own bubble counter for precise adjustment of gas to each aquarium individually.

Download Manual

How to Set Up an Aquarium CO2 System the Easy Way

Features:
– Reduces CO2 in two stages for more stable, reliable flow and to avoid end-of-tank dumps
– Fits standard cylinder tanks that have the male thread size CGA320 (not intended for use with paintball tanks)
– Uses a power adaptor with 100-240 VAC input and 12 VDC output
– Includes an electronic solenoid that can be used with a timer to schedule the CO2 dosing
– Comes with a bubble counter and integrated check valve
– Expands with optional manifold block add-ons to run up to 6 aquariums
– Works with standard CO2 diffusers operating at approximately 40–50 psi

CO2 Scheduling: Plug the regulator into a Wi-Fi timer and program the timer to turn on 1–2 hours before the light comes on and turn off 1 hour before the light shuts off. (If you only have one timer, you can use the same timer with a power strip so that the light and regulator turn on and off at the same time.)

Always wonderful. The site is easy to use (a little too easy).

good

Great product perfect for my betta tank. doesn’t take ip much room, quiet and easy to assemble.

Had one plant not make the journey. Customer service was excellent and refunded immediately. Great company

I love shopping at aquarium co-op online! It was easy to navigate for someone coming into the hobby. Lots of great products with good descriptions to help me find what I need.

Aquarium Co-op is best in class with great selection, service and super fast delivery. Spend enough to get a free shirt as they’re great too!!!

I love Aquarium Co-op products!!! This is the best place for me in this hobby.

Aquarium Coop quality has been consistently good since they started, and still improving every purchase. Good for beginners and experienced hobbyists.

Aquarium Co-Op was my number one source for all things aquatic before I ever had a tank. The blog and YouTube channel were paramount to my research. When the time came to set up my kid's 30 gallon and then my own 75 gallon- Aquarium Co-Op was my first stop. I was able to get everything online that I needed (except the tank) and I've had phenomenal success with both tanks. I run their easy flow sponge filters and use several of their filter media options in my canister. I also use their magic feed food and easy green fertilizer. I swear by the measuring jar (looks like a glass you'd take a swig of your favorite fermented drink)- and I also love the dual ended scoop. Everything is easy to find on the website and their customer service is top notch!

I recommend it

Plants were packaged so nicely and suffered no melt in my tank. I was worried because it’s a long trip to WA state but everything arrived in good condition.

Great company. Just change main shipping company. Amazon is not keeping up with their volume as they grow..

Everything came healthy and well wrapped

You guys are great!! Not a fan of you using Amazon Delivery Service only complaint..

Ordered an Anubsis Berberi. It was beautiful, packaged well and great condition.

Thank you 🙏

good website, fast shipping, decent prices

Never had any issues!

To be very honest, I was very surprised with the contents. Originally, I thought they were going to be sample packets of various items. I received full size items and they are all useful, wonderful items that will be placed on our raffle table. I am excited to see what next months items will be!

Looks like you have worked this in to a good business, though my guess is you make way more money on your mail order, self promotion to the next level of this business by creating Aquarium Co-Op branding. Beleive it or not I am more interested in you warehouse process and what improvement you have made. The way you run you quality insurance, your pick process, packing process, etc.

Always good to buy stuff from Aquarium Coop. The absolute best!

I’ve never had a bad interaction

Always in stock

Great products. East check out. Quick shipping. What else can you ask for?

My son’s first 30 gallon is thriving 40 days in.

I bought a bunch of products, some that arent aquarium coop products and some that are. Pleased to have found a Cyanobacteria treatment from Fritz and Xtreme foods. Easy flow sponge filter is great it can create a lot of bubbles. Other niche products like Easy shrimp and Snails is a great addition. Ziss Air Valve is very reliable compared to Petsmart valves that feel cheap and dont completely close or come off. I come here for Quality products I can trust

This is my second time ordering and it was kind of a disappointment due to one of the plants being completely dead.

Great products. Better prices then at my local shops. Fast shipping. Placed several orders, and have been very happy

Very professional company. Will be doing a lot more business.

I was concerned about shipping to the West Coast, but all plants arrived healthy, and were packaged securely. They're are planted and growing with the help of Easy Green and Easy Root Tabs. I do like these Root Tabs better, they don't float up to the top like the previous ones. All the other items i purchased are staples and will be used when needed. All and all my experience shopping on the co-op site has been perfect, like i expected. Thanks Aquarium co-op ! Sue B.

Everything was perfect, quality at a reasonable price, excellent shopping experience.

The online store is a breeze and searching for the things I need for my aquarium hobby are intuitive and lots of suggested pairings that I didn't realize went together!? How cool is that! Excellent job Cory keep up the great work!

One satisfied customer.

Aquarium coop is always quick to ship. They have the best liquid fertilizer to keep me coming back.

Best customer service hands down. Can’t beat it.

As always the best customer experience in the industry

This company has the best customer service in the industry!!!

Shopping with Aquarium Co-Op is always a seamless experience. Their website is easy to navigate, shipping is super fast, and everything arrives packaged with great care.

Staff are knowledgeable and helpful with anything you need.

Always great experience

Great procedure and quick shipping

Ive been shopping with Aquarium Coop since 2019. They continue to innovate and stay comparative price wise. On top of that they are ethical and continue to grow the aquarium hobby.

Great service, has always been timely and without issue.

Great company......Love Cory! He is so knowledgeable and so down to earth. He is genuine.

Great selection of plants which changes daily so you know they have a good turnover. Will continue to do business with the co-op.

Super fast shipping and reliable products.

I like the coop

Love shopping with you guys! And you make amazing products from food to filter adapters. And I love that you’re always willing to fix/try new things like when you changed your root tabs and in my opinion made them way easier to use/better 11/10 shop and shopping experience. And thats not even starting on all the info I’ve learned over the years

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Aquarium Co-Op CO2 Regulator

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