--- product_id: 496468110 title: "ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank" brand: "ista" price: "£46.48" currency: GBP in_stock: true reviews_count: 5 category: "Ista" url: https://www.desertcart.co.uk/products/496468110-ista-3-in-1-co2-diffuser-bubble-counter-check-valve store_origin: GB region: United Kingdom --- # ultra-fine CO2 mist bubbles 3-in-1 multifunctional design built-in check valve protection ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank **Brand:** ista **Price:** £46.48 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your aquarium game with precision CO2 diffusion! ## Quick Answers - **What is this?** ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank by ista - **How much does it cost?** £46.48 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/496468110-ista-3-in-1-co2-diffuser-bubble-counter-check-valve) ## Best For - ista enthusiasts ## Why This Product - Trusted ista brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Reliable:** Space-saving design with proven durability for all aquarium sizes - • **Triple Power Combo:** Bubble counter, diffuser & check valve all in one sleek unit - • **Mist-Perfect Diffusion:** Generates ultra-fine CO2 bubbles for maximum plant absorption - • **Replaceable Ceramic Plate:** Sustain peak performance with simple ceramic diffuser swaps - • **Easy Setup, Instant Upgrade:** Fits standard 4/6mm CO2 tubing for hassle-free installation ## Overview The ISTA 3-in-1 CO2 Diffuser Bubble Counter Check Valve combines three essential aquarium functions into one compact, resin-built unit. Designed for 4/6mm CO2 tubing, it produces ultra-fine CO2 bubbles for optimal plant growth, features a replaceable ceramic diffuser plate, and includes a check valve to protect your system. Trusted for reliability and ease of installation, it’s a must-have upgrade for any planted tank enthusiast. ## Description CHARACTERISTICS: •3 functions in one unit: CO2 bubble counter, check valve and diffuser. •Produces bubbles as small as a mist of CO2, generating maximum possible diffusion on CO2 in the aquarium. •Undisputable quality and reliability. •Compact size. •Easy to install. For 4/6mm co2 tube (Does not contain) Review: Very good product.. work perfectly.. Build quality - excellent Bubble counter - works absolutely okay Fine CO2 bubbles - excellent But you have to wait for 1-2 days for fine bubbles of CO2. I use it with DIY CO2 Kit (vinegar & baking soda) Review: bubble counter is worth the money my itself. bought another similar product for my 3 30 gallon tanks. other product said it did 4 things, bubble counter, check valve, and diffusser, can not rebember what the forth thing was. when i installed the 4 in one it worked well in that the bubble counter worked and the diffusser, if you soaked it for 24 hrs. i did not on one of them and i got nothing but big bubbles and they did not get smaller. this is why i bought this company's version. this one makes much smaller bubbles and much more of them, bigger diffuser, over all much better product. BUT, none of these products check valve worked. 0 for 4 or i do not know what a check valve is. when my timer turns on my co2 system it takes about 5 to 10 minutes to flush all the water and gases that should not be there before bubbles. Lucky i have back up check valves. This is not a deal breaker having a bubble counter right on the front lines, so to speack, is very nice gave product 5 stars for bubble counter and deffuser alone just have back up check valve. ## Features - These are the most practical diffusers available Into a single piece you have a check valve a bubble counter and the diffuser Also very important is that the ceramic plate can be replaced - CO2 bubble counter check valve and diffuser - Material Type: Resin - Age Range Description: All Life Stages ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00RNYLLYA | | Allergen Information | Nut Free | | Best Sellers Rank | #94,222 in Pet Supplies ( See Top 100 in Pet Supplies ) #6,233 in Aquarium Accessories | | Brand Name | ISTA | | Customer Reviews | 4.2 4.2 out of 5 stars (19) | | Global Trade Identification Number | 04719856835518 | | Included Components | all | | Item Form | Valve | | Item Type Name | CO2 Diffuser | | Item Weight | 0.48 Kilograms | | Manufacturer | Ista | | Target Species | Fish | | Unit Count | 1.0 Count | ## Product Details - **Brand:** ISTA - **Global Trade Identification Number:** 04719856835518 - **Item form:** Valve - **Item weight:** 0.48 Kilograms - **Manufacturer:** Ista ## Images ![ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank - Image 1](https://m.media-amazon.com/images/I/71LBq1XqfGL.jpg) ![ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank - Image 2](https://m.media-amazon.com/images/I/71llnIScQ0L.jpg) ![ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank - Image 3](https://m.media-amazon.com/images/I/71rfsYzSMSL.jpg) ![ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank - Image 4](https://m.media-amazon.com/images/I/71id75fi0IL.jpg) ![ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank - Image 5](https://m.media-amazon.com/images/I/519Ds-WErTL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by I***H on 26 June 2019* Very good product.. work perfectly.. Build quality - excellent Bubble counter - works absolutely okay Fine CO2 bubbles - excellent But you have to wait for 1-2 days for fine bubbles of CO2. I use it with DIY CO2 Kit (vinegar & baking soda) ### ⭐⭐⭐⭐⭐ Review *by G***S on 25 August 2025* bubble counter is worth the money my itself. bought another similar product for my 3 30 gallon tanks. other product said it did 4 things, bubble counter, check valve, and diffusser, can not rebember what the forth thing was. when i installed the 4 in one it worked well in that the bubble counter worked and the diffusser, if you soaked it for 24 hrs. i did not on one of them and i got nothing but big bubbles and they did not get smaller. this is why i bought this company's version. this one makes much smaller bubbles and much more of them, bigger diffuser, over all much better product. BUT, none of these products check valve worked. 0 for 4 or i do not know what a check valve is. when my timer turns on my co2 system it takes about 5 to 10 minutes to flush all the water and gases that should not be there before bubbles. Lucky i have back up check valves. This is not a deal breaker having a bubble counter right on the front lines, so to speack, is very nice gave product 5 stars for bubble counter and deffuser alone just have back up check valve. ### ⭐⭐⭐⭐⭐ Review *by A***R on 2 August 2019* vvv Good ## Frequently Bought Together - Ista 551 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank, Clear - API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box - Seachem Flourish Excel 500 ml --- ## 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.co.uk/products/496468110-ista-3-in-1-co2-diffuser-bubble-counter-check-valve](https://www.desertcart.co.uk/products/496468110-ista-3-in-1-co2-diffuser-bubble-counter-check-valve) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*