--- product_id: 4565102 title: "AQUATEK CO2 Brass Bubble Counter with Integrated Check Valve" brand: "aquatek of california" price: "£0.28" currency: GBP in_stock: false reviews_count: 8 url: https://www.desertcart.co.uk/products/4565102-aquatek-co2-brass-bubble-counter-with-integrated-check-valve store_origin: GB region: United Kingdom --- # Prevents back-siphoning Easy attachment Compatible with multiple models AQUATEK CO2 Brass Bubble Counter with Integrated Check Valve **Brand:** aquatek of california **Price:** £0.28 **Availability:** ❌ Out of Stock ## Summary > 💡 Elevate Your Aquatic Experience! ## Quick Answers - **What is this?** AQUATEK CO2 Brass Bubble Counter with Integrated Check Valve by aquatek of california - **How much does it cost?** £0.28 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/4565102-aquatek-co2-brass-bubble-counter-with-integrated-check-valve) ## Best For - aquatek of california enthusiasts ## Why This Product - Trusted aquatek of california brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Built-in check valve ensures your CO2 system is protected from back-siphoning. - • **Professional Quality:** Engineered for reliability, making it a must-have for serious aquarists. - • **Seamless Integration:** Easily attaches to AQUATEK regulators without the need for tubing or extensions. - • **User-Friendly Design:** Streamlined setup means you can focus on your aquatic masterpiece, not on complicated installations. - • **Versatile Compatibility:** Designed to work flawlessly with AQUATEK CO2 Regulators: Basic R-76, Premium R-76-1, and Mini R-78. ## Overview The AQUATEK CO2 Brass Bubble Counter with Integrated Check Valve is a high-quality accessory designed for seamless compatibility with AQUATEK CO2 Regulators. It features a built-in check valve to prevent back-siphoning, ensuring the safety and efficiency of your CO2 system. ## Description Designed to be compatible with AQUATEK CO2 Regulators (Models: Basic R-76, Premium R-76-1 and Mini R-78). Attaches directly to AQUATEK regulator without tubing or extension. Built-in check valve prevents back-siphoning and protects CO2 system. Instructions: 1.Unscrew the air tube tightening nut completely and remove the black rubber o-ring. 2.Remove the lid of the brass bubble counter. Fill the bubble counter chamber with water until ¾ full; close the lid tightly. 3.Place the black o-ring onto the outlet of your regulator. O-ring should be secured in the groove before the thread. 4.Screw the bubble counter onto the outlet of your regulator 5.Connect CO2 air tube to the brass bubble counter by unscrewing the tightening nut completely, fit one end of air tube through the nut and fit it over the outlet of the bubble counter, and then tighten the nut down. ## Features - Designed to be compatible with AQUATEK CO2 Regulators (Models: Basic R-76, Premium R-76-1 and Mini R-78) - Attaches directly to AQUATEK regulator without tubing or extension - Built-in check valve prevents back-siphoning and protects CO2 system ## Images ![AQUATEK CO2 Brass Bubble Counter with Integrated Check Valve - Image 1](https://m.media-amazon.com/images/I/21sr8ckcdfL.jpg) ## Questions & Answers **Q: Will the water in this bubble checker ever back flow in to the Co2 tank?** A: No the integrated check valve will prevent the water from flowing back towards the co2 tank **Q: has there been any modifaction to the check valve to improve reliability.** A: I use an external check valve in the hose... **Q: I purchased a cheap counter from china & i was not happy with the quality. it was cheap & light. are yours light in weight?** A: The brass makes this heavier in weight than some plastic one; however it still didn't work for me. It may have been just something flawed with the one I received but mine leaked from the bottom so anytime I filled it with water or mineral oil, I'd check it the next day and all the liquid would be gone and it would be puddled underneath the bubble counter in my stand. If I were you, I would just splurge and buy the $20 Atomic bubble counter from Green Leaf Aquariums. Before buying it I had run through maybe four or five different bubble counters, from cheap Chinese knock-offs to this Aquatek Brass one with no luck, then I bought the Atomic one from Green Leaf and have had no issues since. It's been about a year since buying it. Just for the record, I have no affiliation with Green Leaf Aquariums. They've just been what's worked for me. ## Customer Reviews ### ⭐⭐⭐⭐ 4.0 out of 5 stars So far so good. *by J***R on Reviewed in the United States on October 20, 2013* I had one just like this one and it lasted about three years. I had to replace it about three years ago because the interior of clear plastic developed cracks all over and eventually began to leak. I replaced it with one of a different design but it lacked the built in check valve and never worked as well. The plastic of that one got soft over time causing me to have to replace it once again. I am sure the CO2 is causing these problems with the plastic. I decided to switch back to this design because it fits well on my regulator assembly and has the built in check valve. To combat the plastic crazing problem I am using Mineral Oil (from the drug store) in the bubble vial instead of water. My hope is that the mineral oil will protect the plastic from the bad effects of the CO2. It works very well as the bubble media and has the added advantage that it does not evaporate. I have been using it for two months and I have not had the issue with the check valve that the previous two reviewers have described.* UPDATE* It's April 2014 and, no fooling, the Aqatek counter is doing just fine. ### ⭐⭐⭐⭐ 4.0 out of 5 stars Directions a bit lame also. I think manufacturer assumes anyone who purchases ... *by "***" on Reviewed in the United States on April 30, 2016* I had read that some customers were experiencing evaporation. I too seem to be having. The unit directions say to use water but I think I am going to try a bubble counter fluid to see if that helps. Unit also came with an o-ring or seal that I have no idea where it goes as not shown on directions. Directions a bit lame also. I think manufacturer assumes anyone who purchases knows what to do but I like many are novices so a little more instruction would be nice. So far working okay though but need to watch that the water level does not continue to evaporate. ### ⭐⭐⭐ 3.0 out of 5 stars So its useless to me *by J***Y on Reviewed in the United States on August 26, 2015* I found it difficult to get the airline tubing end attaching securely. There is a tiny little O ring on there that gets in the way of the airline tubing so I had to take it off therefore what's the point in it being there. Also don't buy this if you are planning on using it with a paintball canister because the paintball canisters attachment is vertical (unlike most larger Co2 canisters where the attachment sits horizontal on the canister) that means this bubble counter will sit horizontal and it doesn't work horizontally. You need to fill this counter with water in order to see the bubbles meaning it should be upright when used (not side on). So its useless to me. Would be okay if I used a normal Co2 canister and not the paintball one. --- ## 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/4565102-aquatek-co2-brass-bubble-counter-with-integrated-check-valve](https://www.desertcart.co.uk/products/4565102-aquatek-co2-brass-bubble-counter-with-integrated-check-valve) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-26*