--- product_id: 16796285 title: "Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium" brand: "corisrx" price: "€ 371.43" currency: EUR in_stock: true reviews_count: 12 url: https://www.desertcart.gr/products/16796285-undergravel-filteration-bottom-circular-bar-45-3-x-9-6 store_origin: GR region: Greece --- # 45.3" length for broad coverage 27 PVC tubes for optimal water flow 7 L-shape connectors for flexible setup Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium **Brand:** corisrx **Price:** € 371.43 **Availability:** βœ… In Stock ## Summary > 🌊 Elevate your aquarium’s flow game with seamless undergravel filtration! ## Quick Answers - **What is this?** Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium by corisrx - **How much does it cost?** € 371.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/16796285-undergravel-filteration-bottom-circular-bar-45-3-x-9-6) ## Best For - corisrx enthusiasts ## Why This Product - Trusted corisrx brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **27 Durable PVC Tubes:** Ensure consistent water circulation beneath gravel for a healthier aquatic environment. - β€’ **Heavy-Duty PVC Build:** Rely on sturdy, corrosion-resistant materials designed to last and maintain peak performance. - β€’ **Expansive 45.3" Coverage:** Maximize filtration area with a broad circular bar design that fits large tanks seamlessly. - β€’ **Discreet Undergravel Setup:** Keep your aquarium aesthetic clean by hiding filtration tubes beneath gravel effortlessly. - β€’ **Versatile L-Shape Connectors:** Customize your filtration layout with 7 flexible joints for perfect fit and flow. ## Overview The UP Bottom Circular Bar Undergravel Filteration system features a 45.3" length with 27 PVC tubes and 7 L-shaped connectors, designed to optimize water flow beneath gravel in aquariums up to 55 gallons. Made from durable PVC, it offers a discreet and customizable filtration solution that enhances tank health and aesthetics. ## Description UP Bottom circular Bar (115x24.5cm / 45.3x 9.6") undergravel filteration Review: Works great well worth it if you ask me! - The product works great! My pictures shows it fits great around a 1/2 CPVC (gray pipe not included). The filters tubes go under the gravel and optional under gravel filter, the rocks go on top to hide it all. A pond master model 3 pump pumps the water up to a filter not included of course. I only used two kits in my 180 gallon tank so it comes with a lot of parts so that's nice! Review: Poor instructions, parts not compatible with filter - I use a tetra whisper filter and this does not connect. I used heat via a lighter and electrical tape to jerry rig it and it works that way. There were no instructions so you have to figure it out which isn't too hard but definitely caused some initial confusion. Some of the pieces don't fit each other and had to be forced. I had to cut a few pieces to make them fit my filter as well. If you need pictures or measurements, I can post some if you contact me or use the "ask a question" function on this page(it usually send an email to everyone who has recently purchased it). Water seems to come out of the filter at a normal rate so it allows for decent movement. The tubes are somewhat larger so I needed a good 1-2 inches of gravel to fully cover it but petsmart sells the large bags for like $20-ish. I still HAVE to go through and vacuum my gravel out a couple of times a week as this sucks almost nothing up, not by its own fault, its just physics I assume. But don't expect this to help keep your gravel clean, there isn't enough suction. (I have a 40 gallon tank with a 40-50 gallon filter). ## Features - connector 16mm - Pipe diameter 22mm - Circular bar tube is 16.6cm , Total 27 tubes - PVC tube is 16.6cm , Total 3 tube - Connector L Shape Joint , Total 7 pce ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00ZUIRGOU | | Batteries required | No | | Best Sellers Rank | #261,396 in Pet Supplies ( See Top 100 in Pet Supplies ) #4,110 in Aquarium Filter Accessories | | Brand | CORISRX | | Capacity | 55 Gallons | | Color | White | | Customer Reviews | 3.8 3.8 out of 5 stars (153) | | Is Discontinued By Manufacturer | No | | Item Weight | 1.39 pounds | | Item model number | D62140 | | Manufacturer | UP AQUA | | Material | Polyvinyl Chloride (PVC) | | Product Dimensions | 45.3"L x 9.65"W x 9.65"H | | Shape | Round | ## Product Details - **Brand:** CORISRX - **Capacity:** 55 Gallons - **Color:** White - **Material:** Polyvinyl Chloride (PVC) - **Product Dimensions:** 45.3"L x 9.65"W x 9.65"H ## Images ![Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium - Image 1](https://m.media-amazon.com/images/I/918giEX99+L.jpg) ![Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium - Image 2](https://m.media-amazon.com/images/I/51zU+qLHv6L.jpg) ![Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium - Image 3](https://m.media-amazon.com/images/I/81ZLPbtlqBL.jpg) ![Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium - Image 4](https://m.media-amazon.com/images/I/81B3C4TZqRL.jpg) ![Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium - Image 5](https://m.media-amazon.com/images/I/71kuHf4whHL.jpg) ## Questions & Answers **Q: will this work with a 120 gallon tank or do we need to purchase 2 sets?** A: yes I would order 2 sets for 120 gal I have mine in a 60 gal and it was a perfect fit .. ( side note .. make sure any air stones are above the gravel .. my powerhead was sucking air through the tube until i moved it ) **Q: Will this work with course sand? Or will it fill with sand?** A: Yes it should work , use an air pump do not use filter motor , you want the water to flow. A motor will create pressure. If you’re concerned about sand filling the tube use a weed blocking fabric. Gardeners been using this fabric to block the sunlight out but water still goes through it **Q: Will it work for a tank wifh no gravel?** A: Not really... The gravel weighs it down and is PART of the filtration process... That'sa THE POINT of an under gravel filter **Q: Can this be adapted/connected to a canister filter's intake?** A: I have a gravel filtration system with an external canister and I literally never have to change my water on a 55 gallon. I add water as needed and clean the filter maybe once a month ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great well worth it if you ask me! *by T***I on March 8, 2025* The product works great! My pictures shows it fits great around a 1/2 CPVC (gray pipe not included). The filters tubes go under the gravel and optional under gravel filter, the rocks go on top to hide it all. A pond master model 3 pump pumps the water up to a filter not included of course. I only used two kits in my 180 gallon tank so it comes with a lot of parts so that's nice! ### ⭐⭐⭐⭐ Poor instructions, parts not compatible with filter *by K***N on February 6, 2021* I use a tetra whisper filter and this does not connect. I used heat via a lighter and electrical tape to jerry rig it and it works that way. There were no instructions so you have to figure it out which isn't too hard but definitely caused some initial confusion. Some of the pieces don't fit each other and had to be forced. I had to cut a few pieces to make them fit my filter as well. If you need pictures or measurements, I can post some if you contact me or use the "ask a question" function on this page(it usually send an email to everyone who has recently purchased it). Water seems to come out of the filter at a normal rate so it allows for decent movement. The tubes are somewhat larger so I needed a good 1-2 inches of gravel to fully cover it but petsmart sells the large bags for like $20-ish. I still HAVE to go through and vacuum my gravel out a couple of times a week as this sucks almost nothing up, not by its own fault, its just physics I assume. But don't expect this to help keep your gravel clean, there isn't enough suction. (I have a 40 gallon tank with a 40-50 gallon filter). ### ⭐⭐⭐⭐⭐ I love the under gravel type filters. Tank water stays clean. *by M***S on February 4, 2021* I like that you can build it according to the dimensions of your tank.. I purchased 2 as I have a 125 gallon aquarium. Running 2 powerheads (375 gph each) and 2 penn-plax cascade 300 hang on filters. Aquarium is crystal clear compared to using the canister filter I was using. ## Frequently Bought Together - Undergravel Filteration Bottom Circular Bar 45.3\x 9.6 Under Gravel Filter Tube Aquarium - Marineland Maxi-Jet 600, Multi-Use Water Pump And Power Head, Fully Convertible (ML90510), 160/750 GPH - Penn-Plax Undergravel Aquarium Filter for 40-55 Gallon Tanks – Four 11.25” x 11.25” Plates – Under Gravel System for Clear, Clean Water – Safe for Freshwater and Saltwater Tanks (CFU55) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/16796285-undergravel-filteration-bottom-circular-bar-45-3-x-9-6](https://www.desertcart.gr/products/16796285-undergravel-filteration-bottom-circular-bar-45-3-x-9-6) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-04-23*