Aquarium Co-Op CO2 Regulator

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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.)

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Anonymous

Fast shipping packed well.

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Aquarium Co-Op
michael k. (Greensboro, NC, US)

Always a pleasure to order from these folks!! I never worry about anything because I know my order is in good hands!

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Aquarium Co-Op
John R. (Salado, TX, US)

My order arrived a day earlier than expected and was packaged properly. Awesome service.

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William M.R.J. (Sterling Heights, MI, US)

Always a pleasure

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Wayne B. (Genoa, OH, US)

Always a fun to shop online at aquarium co-op

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Roskar R. (Stephentown, NY, US)

The shipment usually takes longer than expected though the products do not disappoint.
Worth the wait.

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Kelly T. (Odessa, TX, US)

Everything I've ever ordered has been correct and delivered before I've expected!

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Nate A. (Lafayette, AL, US)

Aquarium coop is by far the best online store for your aquarium needs. Haven’t ran into any issues yet

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Anonymous (Whittier, CA, US)

I ordered an air pump. It was abnormally loud, so I contacted Aquarium Co-Op. I received an email response right away and all of my other questions were answered quickly. They replaced the pump for me, no issues. Customer service has always been great!

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Gavin B. (Farmer City, IL, US)

Order arrived on time and well packaged. Got exactly what was advertised and plants were very healthy.

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Aaron R. (MT, US)

Amazon delivery to the west coast isn’t great. Anywhere from 5-7 days to get it from Kentucky to Utah. And you have to hope plants won’t have issues with being locked away from light that long. I kind of wish I could just get discounted ups/fedex and at least get it here a few days earlier.

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Aprils A. (Vancouver, BC, CA)

As the owner of a tropical fish and aquarium business, We have ordered from many suppliers over the years. Aquarium Co-op consistently provides a first-class shopping experience. Orders are processed quickly, products arrive exactly as described and accurate (unlike the majority of other manufactures in the hobby) and communication is excellent. Overall its " easy". Their commitment to quality and customer satisfaction really sets them apart by a long shot in fact it is unrivaled. A pleasure to do business with every time.

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James I. (Sandown, NH, US)

Always a pleasure purchasing from Aquarium Co-op!

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Maggie S. (Virginia Beach, VA, US)

Seemless and speedy wish I could get more of your in-store product lines

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Patricia W. (Gilmer, TX, US)

Always a great experience.

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Wayne B. (Genoa, OH, US)

Website is very well set up and organized. Very easy to find exactly what I was looking for. Fast order confirmation and shipping with automatic updates. Always knowing customer support is there if needed is reassuring.

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BETH D. (Hedgesville, WV, US)

Fast service, good products

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Maggie S. (Virginia Beach, VA, US)

When I have had an issue with a. Leaky cap the team was very responsive and met every expectation for customer service.

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Maggie S. (Virginia Beach, VA, US)

Arrives very promptly and thoughtfully packaged. Plants too. Makes it too easy. Wish I could buy more things this way. Plus I love my growing collection of fish tshirts and stickers.

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John C. (Manhattan, KS, US)

This is the best place to buy Aquarium Gear!

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Berry S. (Van Horn, TX, US)

My plants came quickly and were very healthy. Already ordered more!

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John K. (The Villages, FL, US)

Website is easy to use. Free shipping is great. Products always arrive a day early!

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John H. (Prairie Grove, AR, US)

Seriously an amazing store. I wish I lived closer. Cory and his team are highly knowledgeable and willing and always ready to answer questions or give stellar advice!

Honestly you shouldn’t shop anywhere else!!

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John H. (Prairie Grove, AR, US)

Amazing people and high quality well, everything! You can’t go wrong with Aquarium co-op!!

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John H. (Prairie Grove, AR, US)

You can never go wrong ordering plants from Aquarium co-op!

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Aquarium Co-Op
John H. (Prairie Grove, AR, US)

You can never go wrong ordering plants from Aquarium co-op!

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Aquarium Co-Op
John H. (Prairie Grove, AR, US)

You can never go wrong ordering plants from Aquarium co-op!

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Anonymous (Miami, FL, US)

My go to store for plants

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Narciso Y. (Sacramento, CA, US)

I loved the customer support, fast and reliable response. Also the products affordble and sheeeesh

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Aquarium Co-Op
Duane B. (Miami, FL, US)

Fast great web presence.

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Aquarium Co-Op
Michael D. (Newport, NH, US)

Great place ships.Plants well packaged and fast.

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John H. (Prairie Grove, AR, US)

Aquarium co-op is the go to store for plants, plant care, and well everything they sell is stellar! I highly recommend Aquarium co-op for just about anything!