--- product_id: 8039803 title: "Tetra Pond GreenFree 9W UV Clarifier" brand: "tetra" price: "B/.53" currency: PAB in_stock: false reviews_count: 13 url: https://www.desertcart.com.pa/products/8039803-tetra-pond-greenfree-9w-uv-clarifier store_origin: PA region: Panama --- # Quick algae kill in 5 days Clears ponds up to 1800 gallons 9W powerful UV-C lamp Tetra Pond GreenFree 9W UV Clarifier **Brand:** tetra **Price:** B/.53 **Availability:** ❌ Out of Stock ## Summary > 🌟 Transform your pond into a crystal-clear oasis β€” algae doesn’t stand a chance! ## Quick Answers - **What is this?** Tetra Pond GreenFree 9W UV Clarifier by tetra - **How much does it cost?** B/.53 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/8039803-tetra-pond-greenfree-9w-uv-clarifier) ## Best For - tetra enthusiasts ## Why This Product - Trusted tetra brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Optimized for Large Ponds:** Effectively treats ponds up to 1800 gallons, perfect for serious pond enthusiasts and garden sanctuaries. - β€’ **Crystal Clear Waters, Fast:** Eradicates heavy algae blooms within just 5 days, restoring pond clarity and vibrancy. - β€’ **Powerful 9W UV-C Technology:** Utilizes advanced ultraviolet light to disrupt algae reproduction at the cellular level for long-term pond health. - β€’ **Durable & UL-Certified Reliability:** Built to last with UL safety certification, ensuring peace of mind and consistent performance season after season. - β€’ **Effortless Installation & Discreet Design:** Sets up in minutes and blends seamlessly into your pond environment without disrupting aesthetics. ## Overview The Tetra Pond GreenFree 9W UV Clarifier is a robust ultraviolet clarifier designed to keep ponds up to 1800 gallons free from green algae. By exposing suspended algae to powerful 9-watt UV-C light, it disrupts their reproductive cycle, eliminating algae blooms typically within five days. Easy to install and UL-certified for safety, this durable clarifier integrates discreetly into your pond setup, ensuring long-lasting clarity and healthier aquatic life. ## Description 16788 Features: -Ponds up to: 1,800 Gallons. -Max Pump Flow: 900 GPH. -Includes fittings for tubing 0.75'', 1'', and 1.25''. Generic Specifications: -UV Bulb: 9 watt. Dimensions: Overall Product Weight: -4.2 Pounds. Review: Kills the algae and clears the pond water! - I built a koy pond in my garden 3 years ago. 4 cubic meters or so. I've had all the normal issues about a pond, mainly the massive growing of microscopic algae that turns the water opaque green. This always dissapointed me because it was not possible to see the fish. After two weeks from a deep cleaning I couldn't even know if they were alive. After doing some research in the internet I took ideas from different designs and decided to built my own filter. It's an external tank-type filter. The water is pumped from the pond, goes through the TetraPond UVC-9 lamp, then goes to the bottom of the tank (there is a circular flow which produces a cyclonic effect on the solid debries). Some bio-balls help with the first biologic processing of the organic solids. Then the water passes upwards thru four layers of Matala Mats (black, green, blue and gray), combined with a last group of bio-balls at the top of the tank. At the top of the tank the water falls thru a side sink directly to the pond. It's a very simple design, and I am happy to say that IT REALLY WORKS!!!! This system kills the microscopic algae, filters almost all the solid debries, treats biologically and chemically the water and makes a very efficient processing of the solids. I started the field test with the pond totally opaque green, since I needed to prove the efficiency of the system. The combination of these different elements was able to totally clear the water in only 9 days!! By now it's been more than 3 months since the last time the microscopic algae showed in my pond. My fish are healthy and are growing noticeablely, I am sure they never lived in a better quality water. The maintenance couln't be easier: I just have to turn the pump off, dismount the Matala layers and rinse everything with a regular hose. The tank also is rinsed and the waste water is disposed of thru a control valve mounted at the bottom of the tank. Finally I reassemble the parts and the system is ready to work again. The Matala mats came in 39"x24" sheets, so I still have spare material for two more filters, If I decided to build more ponds for my friends. I strongly recommend Matala Mats, TetraPond UVC-9 UV lamps and the bio balls to any pond enthusiast. Review: Excellent - Works well! Seems a little pricey, but does a fantastic job keeping our pond clear and clean . It was easy to install. ## Features - 9watt Greenfree Uvc - 9 Clarifier (ponds To 1800gal) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00474FI48 | | Best Sellers Rank | #614,107 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #963 in Water Garden & Pond Treatment | | Brand | Tetra | | Brand Name | Tetra | | Customer Reviews | 4.5 out of 5 stars 599 Reviews | | Global Trade Identification Number | 00046798195207, 10046798195204 | | Item Form | Liquid | | Item Weight | 3.8 pounds | | Liquid Volume | 1800 gallons | | Manufacturer | Tetra Pond | | Manufacturer Part Number | 956619 | | Model Number | 19520 | | Pet Type | Fish | | Target Species | Fish | | UPC | 046798195207 | | Unit Count | 1 Count | ## Product Details - **Brand:** Tetra - **Item Form:** Liquid - **Item Weight:** 3.8 Pounds - **Liquid Volume:** 1800 Gallons - **Manufacturer:** Tetra Pond ## Images ![Tetra Pond GreenFree 9W UV Clarifier - Image 1](https://m.media-amazon.com/images/I/71jCNu5ItxL.jpg) ![Tetra Pond GreenFree 9W UV Clarifier - Image 2](https://m.media-amazon.com/images/I/716nOD+1QAL.jpg) ![Tetra Pond GreenFree 9W UV Clarifier - Image 3](https://m.media-amazon.com/images/I/81fRn6tKSiL.jpg) ![Tetra Pond GreenFree 9W UV Clarifier - Image 4](https://m.media-amazon.com/images/I/71kmvcCXFyL.jpg) ![Tetra Pond GreenFree 9W UV Clarifier - Image 5](https://m.media-amazon.com/images/I/81ihBhp3smS.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Kills the algae and clears the pond water! *by R***A on August 22, 2013* I built a koy pond in my garden 3 years ago. 4 cubic meters or so. I've had all the normal issues about a pond, mainly the massive growing of microscopic algae that turns the water opaque green. This always dissapointed me because it was not possible to see the fish. After two weeks from a deep cleaning I couldn't even know if they were alive. After doing some research in the internet I took ideas from different designs and decided to built my own filter. It's an external tank-type filter. The water is pumped from the pond, goes through the TetraPond UVC-9 lamp, then goes to the bottom of the tank (there is a circular flow which produces a cyclonic effect on the solid debries). Some bio-balls help with the first biologic processing of the organic solids. Then the water passes upwards thru four layers of Matala Mats (black, green, blue and gray), combined with a last group of bio-balls at the top of the tank. At the top of the tank the water falls thru a side sink directly to the pond. It's a very simple design, and I am happy to say that IT REALLY WORKS!!!! This system kills the microscopic algae, filters almost all the solid debries, treats biologically and chemically the water and makes a very efficient processing of the solids. I started the field test with the pond totally opaque green, since I needed to prove the efficiency of the system. The combination of these different elements was able to totally clear the water in only 9 days!! By now it's been more than 3 months since the last time the microscopic algae showed in my pond. My fish are healthy and are growing noticeablely, I am sure they never lived in a better quality water. The maintenance couln't be easier: I just have to turn the pump off, dismount the Matala layers and rinse everything with a regular hose. The tank also is rinsed and the waste water is disposed of thru a control valve mounted at the bottom of the tank. Finally I reassemble the parts and the system is ready to work again. The Matala mats came in 39"x24" sheets, so I still have spare material for two more filters, If I decided to build more ponds for my friends. I strongly recommend Matala Mats, TetraPond UVC-9 UV lamps and the bio balls to any pond enthusiast. ### ⭐⭐⭐⭐⭐ Excellent *by E***E on July 3, 2025* Works well! Seems a little pricey, but does a fantastic job keeping our pond clear and clean . It was easy to install. ### ⭐⭐⭐⭐⭐ Green water? Here is your cure *by M***A on October 19, 2020* Thanks to 2020 being so, well 2020, we had a lot of lock-down time on our hands. We got a ton of projects around the house done, including building a couple of ponds with a little mini-stream connecting them. We live in Miami, so naturally everything was happy for the first 6 or so weeks, then came the Algae explosion. We could no longer even see our wonderful koi, comets and African Ciclids. Only the guppies and mollies hanging out at the surface were evident. We added the 1800 gallon model for our 800 gallon pond setup and within three days we were able to see all our fish again and within a week the water was as clear as the day we filled the pond. It just works and was easy for me to install - I just cut off the smaller hose diameter "step downs" on the intake and outlet nipples since we're using 1.25" tubing. Don't touch the bulb with your oily hands when you set it up and you should be able to avoid the symptom other reviewers have posted around very short bulb life. We've only had the UV light in for 6 weeks, so I can't speak to long term UV bulb life, but it's definitely doing it's job and I'll be happy even if I have to replace the bulb 2 or even 4 times per year. The power consumption is minimal, but I'm considering the pros/cons of putting the light on a timer and running it 8-12 hours/day vs. 24/7, I just haven't gotten around to it. Hope this review helps anyone staring at pea soup instead of their fish! ## Frequently Bought Together - Tetra Pond GreenFree 9W UV Clarifier - TetraPond Replacement Bulb For GreenFree UV Clarifier, For Clean And Clear Ponds, 9-Watt, 1 Count (Pack of 1) --- ## 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.com.pa/products/8039803-tetra-pond-greenfree-9w-uv-clarifier](https://www.desertcart.com.pa/products/8039803-tetra-pond-greenfree-9w-uv-clarifier) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-07-28*