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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
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Description
EHEIM CO2-SET400, reusable system, without bottleIncluded with the set are various accessories, such as: Precision pressure reducer featuring manometers and an accurate dosing valve for refillable systems 360 rotating hose connector CO specific safety hose, pressure resistant, measuring 3m, 4 6 mm CO safety diffuser with a bubble counter and non return valve for efficient CO dosing 5 water test strips for assessing the initial water parameters CO long term test kit and indicator reagent for
- Precision pressure reducer featuring manometers and an accurate dosing valve for refillable systems
- 360° rotating hose connector
- CO²-specific safety hose, pressure-resistant, measuring 3m, Ø 4/6 mm
- CO² safety diffuser with a bubble counter and non-return valve for efficient CO² dosing
- 5 water test strips for assessing the initial water parameters
- CO² long-term test kit and indicator reagent for continuous monitoring of CO² levels in the aquarium
Easy and tool-free installation.
Optional accessories (not included): CO² magnetic valve (for night shut-off).
Manufactured in Germany.
3-year guarantee.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
protection plan is easy.
The protection plan worked on my coffee pot. It was just over 14 months and started to leak. I first called amazon and they sent me a link to the protection plan. It was very easy to use. I received a Amazon gift card instead of a replacement. The price of the coffee pot had increased so you will receive the lower option. I did receive the total cost of the pot at the time I purchased it.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Great price & works fast.
Compact and fast - I love it! Could not beat the price and it's faster than my Food Saver!
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Protection Plan
The process was easy and flawless
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Reviewed in the United States on June 1, 2026
★★★★★ 5
It is worth purchasing a Protection Plan on an unfamiliar item
Bought a 3-year protection plan for a nut milk maker machine for $5.99. It was a fairly new kitchen item in our household and we were not familiar with the brand. So, I bought the plan for a piece (peace) of mind. The machine worked nicely for about 18-20 months with daily use until it tripped the circuit outlet.
My initial chat with Asurion did not go as I expected due to discrepancy on their end as they see a protection plan for the nut milk maker as a sporting goods valued between $100-$199, not as a kitchen item valued between $30-$39.99. ( I had bought 3 different protection plan on th same day for multiple items purchased on Prime Days). They were looking at a different plan and I was unable to get them to "scroll over" to the appropriate protection plan.
I tried again on a different day during the first hour of their contact hours and had a cheerful Asurion agent who was able to find the appropriate kitchen item protection plan. It was a simple and thorough conversation and transaction. I was refunded within hours after I packed up and dropped off the damaged item out to UPS.
Moral of the story: Asurion Protection Plan is worth it and contact them at the start of their first day shift, not at the end of their evening shift.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Warranty Plan
Hop I won’t have to use the warranty but it was reasonably priced.
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Reviewed in the United States on April 21, 2026