--- product_id: 58351894 title: "CO2 Diffuser for Aquarium, Excellent CO2 Solubility Ensuring Vigorous Plants (20Dx350L)" brand: "fibst" price: "HK$221" currency: HKD in_stock: false reviews_count: 8 url: https://www.desertcart.hk/products/58351894-co2-diffuser-for-aquarium-excellent-co2-solubility-ensuring-vigorous-plants store_origin: HK region: Hong Kong --- # Easy ceramic sheet cleaning All-round microbubble diffusion 304 stainless steel durability CO2 Diffuser for Aquarium, Excellent CO2 Solubility Ensuring Vigorous Plants (20Dx350L) **Brand:** fibst **Price:** HK$221 **Availability:** ❌ Out of Stock ## Summary > 🌿 Elevate your aquarium’s vibe with bubbles that mean business! ## Quick Answers - **What is this?** CO2 Diffuser for Aquarium, Excellent CO2 Solubility Ensuring Vigorous Plants (20Dx350L) by fibst - **How much does it cost?** HK$221 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/58351894-co2-diffuser-for-aquarium-excellent-co2-solubility-ensuring-vigorous-plants) ## Best For - fibst enthusiasts ## Why This Product - Trusted fibst brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **360° Microbubble Mastery:** Experience superior CO2 solubility with all-around bubble dispersion that outperforms partial bubble diffusers. - • **User-Friendly Maintenance:** Removable ceramic diffuser sheet allows hassle-free cleaning to maintain peak CO2 diffusion. - • **Reliable Warranty & Support:** Backed by a 6-month ceramic sheet and 24-month parts warranty plus responsive customer service for peace of mind. - • **Pressure-Optimized Performance:** Designed to operate efficiently at 7.5 PSI/0.5 MPa, ensuring consistent and vigorous plant growth. - • **Sleek Stainless Steel Elegance:** Crafted from premium 304 stainless steel, combining durability with minimalist, modern aquarium aesthetics. ## Overview The fibst CO2 Diffuser (20Dx350L) is a premium aquarium accessory engineered for optimal CO2 solubility through 360° microbubble diffusion. Made from durable 304 stainless steel, it offers a sleek design that resists fragility and corrosion. Operating at 7.5 PSI, it ensures vigorous aquatic plant growth while featuring an easy-to-clean ceramic diffuser sheet. Supported by comprehensive warranties and customer service, it’s the smart choice for millennial aquarists seeking both function and style. ## Description What You Get:1 x stainless steel CO2 diffuser1 x stainless steel fixture6-month warranty for ceramic sheet24-month warranty for other parts warranty and friendly customer servicePlease tighten the cup and soak it into water for more than 3 hours before transmitting carbon dioxide gas to it and adjusting the pressure to a appropriate level. It is normal if big bubbles appear when the diffuser begins to work. After 24 hours, the bubbles will be smaller and the system will reach an optimal state. Review: Narrow Rim Hook but Great Bubbles - This is my first time using c02, and this diffuser works great for my application; I have a 32 gal tank, with snails and fish. Instructions say to soak for three hours but it was at least 24 hours before I could get back to it after hanging it in the tank. After completing setup I turned it on and....voila!! Tiny bubbles! The instructions stated initially bubbles would be big but would settle down after a couple of days to tiny bubbles. I think the extra soak time probably prevented that situation. The only problem I have with this diffuser is the shape. I liked the look of the long neck with hook at the top but it doesn’t fit over the edge of my tank very well. My tank is Bio Cube and we’ve removed the hood and placed a Finnex LED light on the open top. The rim where the hood closed is pretty thick, and the hook of the diffuser isn’t wide enough to fit easily. It doesn’t bend easily and would possibly break if forced. I’ll use it until I get a different one, and will keep it for rimless tank setup later on. It does work well! Review: Delivers the CO2 Well - My local independent aquarium supply house had a similar item but not as long (deep) so I had to find this online. My aquarium is 24 inches high and it is important to get the CO2 diffuser as far down in the tank as possible so the tiny CO2 bubbles get dissolved in the water before reaching the surface. This item works well with my new beer keg regulator and CO2 tubing. I can see the small bubbles coming out of the diffuser disc like it is supposed to. My one complaint about the seller is that they need to offer replacement discs at a reasonable price. I was able to buy a ten pack for about twelve dollars from a different seller on desertcart that fit this unit perfectly. I like to change out the discs when I clean the aquarium and clean them with a mild solution of bleach and water then rinse them and dry them for use another time. Would I buy it again ? Yes. I think it's a very good product that is attractive and WORKS properly. ## Features - This CO2 diffuser can generate all-round bubbles, superior to similar products on the market that can only produce partial bubbles. - Made of 304 stainless steel,this is not only a CO2 diffuser but also a work of art,simple and elegant. - Special note: This product needs 7.5PSI/0.5MPa air pressure to generate bubbles.Turn the cup counterclockwise and you can remove the ceramic sheet for cleaning. - With stainless steel tube of 5mm diameter, the kit is easy to install and not as fragile as glass. - What You Get: 1 x stainless steel CO2 diffuser, 1 x stainless steel fixture, 6-month warranty for ceramic sheet, 24-month warranty for other parts and friendly customer service. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0779QXBZJ | | ASIN | B0779QXBZJ | | Best Sellers Rank | #426,439 in Pet Supplies ( See Top 100 in Pet Supplies ) #2,395 in Aquarium Air Pump Accessories | | Brand Name | fibst | | Color | Silver | | Customer Reviews | 4.3 4.3 out of 5 stars (177) | | Date First Available | November 9, 2017 | | Date First Available | November 9, 2017 | | Is Discontinued By Manufacturer | No | | Item Dimensions LxWxH | 13.78 x 2.76 x 1.38 inches | | Item Package Dimensions L x W x H | 15.35 x 3.58 x 1.38 inches | | Item Weight | 0.35 Pounds | | Manufacturer | fibst | | Manufacturer | fibst | | Product Dimensions | 13.78 x 2.76 x 1.38 inches; 5.6 ounces | | Size | 20Dx350L | | Target Audience Keyword | fish | ## Images ![CO2 Diffuser for Aquarium, Excellent CO2 Solubility Ensuring Vigorous Plants (20Dx350L) - Image 1](https://m.media-amazon.com/images/I/51tsCQzkjoL.jpg) ![CO2 Diffuser for Aquarium, Excellent CO2 Solubility Ensuring Vigorous Plants (20Dx350L) - Image 2](https://m.media-amazon.com/images/I/61Uc8NER05L.jpg) ![CO2 Diffuser for Aquarium, Excellent CO2 Solubility Ensuring Vigorous Plants (20Dx350L) - Image 3](https://m.media-amazon.com/images/I/717q42vrxRL.jpg) ![CO2 Diffuser for Aquarium, Excellent CO2 Solubility Ensuring Vigorous Plants (20Dx350L) - Image 4](https://m.media-amazon.com/images/I/81zJg8KzKbL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Narrow Rim Hook but Great Bubbles *by J***E on March 20, 2021* This is my first time using c02, and this diffuser works great for my application; I have a 32 gal tank, with snails and fish. Instructions say to soak for three hours but it was at least 24 hours before I could get back to it after hanging it in the tank. After completing setup I turned it on and....voila!! Tiny bubbles! The instructions stated initially bubbles would be big but would settle down after a couple of days to tiny bubbles. I think the extra soak time probably prevented that situation. The only problem I have with this diffuser is the shape. I liked the look of the long neck with hook at the top but it doesn’t fit over the edge of my tank very well. My tank is Bio Cube and we’ve removed the hood and placed a Finnex LED light on the open top. The rim where the hood closed is pretty thick, and the hook of the diffuser isn’t wide enough to fit easily. It doesn’t bend easily and would possibly break if forced. I’ll use it until I get a different one, and will keep it for rimless tank setup later on. It does work well! ### ⭐⭐⭐⭐⭐ Delivers the CO2 Well *by O***! on November 15, 2018* My local independent aquarium supply house had a similar item but not as long (deep) so I had to find this online. My aquarium is 24 inches high and it is important to get the CO2 diffuser as far down in the tank as possible so the tiny CO2 bubbles get dissolved in the water before reaching the surface. This item works well with my new beer keg regulator and CO2 tubing. I can see the small bubbles coming out of the diffuser disc like it is supposed to. My one complaint about the seller is that they need to offer replacement discs at a reasonable price. I was able to buy a ten pack for about twelve dollars from a different seller on Amazon that fit this unit perfectly. I like to change out the discs when I clean the aquarium and clean them with a mild solution of bleach and water then rinse them and dry them for use another time. Would I buy it again ? Yes. I think it's a very good product that is attractive and WORKS properly. ### ⭐⭐⭐⭐ Much better than the glass diffusers and aesthetically nice also. *by A***R on March 1, 2018* Compared to all of the other diffusers I used, this is my favorite so far. The quality is great, really sturdy/solid and beautifully designed. I did not have to worry about putting on the CO2 tubing (the black rigid kind) and breaking the diffuser like some of the ones that are made out of glass. The bubbles are fine and evenly dispersed (some of my other diffusers have various size bubbles coming out of the ceramic membrane). No cheap plastic suction cup to hold the diffuser in place either. This works well with my rimless tank, but on my larger braced tank, I had to cut a small piece from the aquarium bracing for the diffuser. This is because the curve at the top of the diffuser can only support 1/2 and my aquarium + brace is 3/4 inch. Cleaning the diffuser is easy, just unscrew the top and clean the ceramic membrane without worrying about breaking anything. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hk/products/58351894-co2-diffuser-for-aquarium-excellent-co2-solubility-ensuring-vigorous-plants](https://www.desertcart.hk/products/58351894-co2-diffuser-for-aquarium-excellent-co2-solubility-ensuring-vigorous-plants) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-05-16*