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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Dennerle Carbo Bio Style 120 Stainless Steel CO2 ReactorDennerle Carbo Bio Style 120 Stainless Steel Reaction Chamber The Dennerle Bio Style 120 CO2 Stainless Steel Reaction Chamber is a complete fertilizer system for freshwater aquaria. Provides a constant supply of fertilization for aquarium plants, supplied with a 40 day supply of CO2 Constant Gel. Complete set for uniform CO2 fertilization Refillable reaction container made of stainless steel with pressure relief valve With Dennerle CO2 Constant Gel
Dennerle Carbo Bio Style 120 Stainless Steel Reaction Chamber
The Dennerle Bio Style 120 CO2 Stainless Steel Reaction Chamber is a complete fertilizer system for freshwater aquaria. Provides a constant supply of fertilization for aquarium plants, supplied with a 40-day supply of CO2 Constant Gel.
- Complete set for uniform CO2 fertilization
- Refillable reaction container made of stainless steel with pressure relief valve
- With Dennerle CO2 Constant Gel for at least 40 days of steady CO2 production
- For healthy, strong plants and bright colors
Carbon is the most important nutrient for aquarium plants.
The Dennerle Carbo Bio Style 120 bio CO2 fertilizer system supplies all freshwater aquaria up to 120 liters (31.7 US gal.) with vital CO2. It is ready for operation in just a few steps. The CO2 production already starts after 24 to 48 hours. A Bio CO2 diffuser specially designed for low operating pressure ensures fast, effective dissolution of the valuable CO2 in the aquarium water. Thanks to its modern, timeless design, the fertilizer system also cuts a fine figure standing directly next to the aquarium.
A pressure relief valve, pressure-resistant CO2 hose and solid hose fittings ensure a high level of operating safety. The Dennerle Carbo Bio Style 120 CO2 fertilizer system is designed to be particularly sustainable: The stainless steel reaction container is refillable and can be used for many years, the CO2 Constant gel consists of 100 % renewable raw materials.
Plants consist of almost 50% carbon. CO2 is therefore their most important nutrient. It serves as the basic building block for photosynthesis. From CO2, water and light, they produce their most important building material and energy source: sugar. As a "waste material“, oxygen is produced, which all animals need to breathe.
Without the addition of CO2, the level in aquaria is always too low. Plants therefore grow only slowly or not at all. This in turn means little oxygen production for fish and shrimp, but above all the risk of algae problems increases significantly. Well growing aquatic plants are the best prevention against algae!
Only a regular addition of CO2 creates the natural basis for healthy, strong plant growth, lush green leaves and bright colors. The plants produce more oxygen for the fish, ensure better water quality and actively prevent algae.
The valuable carbon is produced by a 100 % natural bio-reaction. Selected microorganisms, in combination with the CO2 Constant gel developed by Dennerle, supply an almost constant amount of CO2 (per filling) for at least 40 days.
In conventional Bio CO2 systems, on the other hand, which work with white household sugar, CO2 production tends to be very irregular.
Dimensions: 195mm / 7.67" x 105mm / 4.13"
Hose included.
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
4.6 ★★★★★
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Product Reviews
★★★★★ 5
Expensive
Size: Queen (Mid Loft), Number of Items: 1
Very comfortable, smell goes away
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Winners in my book
Size: Queen (Mid Loft), Number of Items: 1
Great bang for your buck ! Almost have a bunch feel to them. Hold their shape
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Reviewed in the United States on May 29, 2026
★★★★★ 4
Softer than expected
Size: Queen (Mid Loft), Number of Items: 1
Not as firm as I would like. Make sure you want a soft pillow if you choose this one. Seems high quality otherwise
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Reviewed in the United States on August 6, 2025
★★★★★ 5
Super comfortable and great neck support
Size: Queen (Mid Loft), Number of Items: 1
This pillow is super comfortable!
It has support for the neck, which is so important so that my neck doesn’t end up creasing and cutting off your air. Great for side, sleepers or people that need a little bit more support. The height is about 5 inches- it appears firm, but it conforms to your neck shape and supports it. Great value for the money! I own four of them and guests finds them comfortable also
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Perfect Pillow
Size: Queen (Mid Loft), Number of Items: 1
This is the best pillow I’ve ever had! Supportive yet soft. Never goes flat. I’m a side sleeper and I have neck and shoulder pain and this pillow keeps my head and neck in alignment. I’m buying a set for our camper and our 2nd home so I can sleep comfortably wherever I go. Price point is spot on for the quality of pillow.
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Reviewed in the United States on July 23, 2025