--- product_id: 4097749 title: "Tetra Water Clarifier Treatment for Aquariums, 8.45 oz" brand: "tetra" price: "€ 3.60" currency: EUR in_stock: false reviews_count: 13 url: https://www.desertcart.sk/products/4097749-tetra-water-clarifier-treatment-for-aquariums-8-45-oz store_origin: SK region: Slovakia --- # Safe for soft water & fish Clears cloudy water fast Clumping action for easy filtration Tetra Water Clarifier Treatment for Aquariums, 8.45 oz **Brand:** tetra **Price:** € 3.60 **Availability:** ❌ Out of Stock ## Summary > 💧 Make your aquarium the envy of every fish lover! ## Quick Answers - **What is this?** Tetra Water Clarifier Treatment for Aquariums, 8.45 oz by tetra - **How much does it cost?** € 3.60 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/4097749-tetra-water-clarifier-treatment-for-aquariums-8-45-oz) ## 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 - • **Trusted Since 1951:** Backed by decades of Tetra expertise for reliable aquarium care - • **Fish-Friendly Formula:** Gentle on fish and plants, even in ultra-soft water conditions - • **Smart Clumping Technology:** Suspended particles clump for effortless removal via your filter - • **Phosphate-Free & pH Neutral:** Keeps your aquatic ecosystem balanced and healthy - • **Crystal Clear Aquariums, Fast:** Transforms murky water with just 1 tsp per 10 gallons ## Overview Tetra Water Clarifier is an 8.45 oz liquid treatment designed to quickly clear cloudy freshwater aquariums by clumping suspended particles for easy filtration. Safe for fish and plants, including in very soft water, it uses a phosphate-free, pH-neutral formula trusted since 1951 to maintain crystal-clear water and a healthy aquatic environment. ## Description Tetra WaterClarifier clears cloudy aquarium water caused by overfeeding gravel dust and other minute suspended particles This phosphate-free liquid solution is safe to use in all freshwater aquariums This effective formula works by causing small suspended particles to quickly clump together These larger particles are then removed during normal power filter operation This formula is based on clarifiers used to treat drinking water It’s safe to use with fish and plants and will not affect water pH levels in your aquarium Unlike many clarification products on the market Tetra WaterClarifier is safe for fish even in very soft water (low KH) conditions However in extremely low KH conditions below 1KH half dosage is recommended If in doubt about your water’s hardness perform a 20% water change before treatment Be sure to use Tetra AquaSafe water conditioner for each partial water change and Tetra EasyStrips Test Strips to measure your water’s hardness Since 1951 Tetra has developed the world’s most comprehensive body of fish food knowledge and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home Whether you're an experienced hobbyist or just starting out Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor Review: Added it to my 60-gallon tank - before and after pictures - Berfore: My tank is cloudy, probably from having its light on too much, from overfeeding and from algae. When I remove algae with a sponge and a scraper it's going to float and mess up the water a little. Did a 25 percent water change and put new Poly-fill in my Seachem Fluval 75 HOB filter. Then this evening at 7 pm I took a picture and added 30 ml of Tetra Water Clarifier to the water. (That was easy to do because the bottle has a very small opening and there are raised lines on its side each indicating 10 ml. So I kept pouring until the level was down three lines.) AFTER: It's five days later. After 48 hours I did a 25 percent water change and added another 30 ml dose. Then 48 hours later a third dose, changing my Poly-Fill filter, which had already tra[[ed much fine "stuff". IT WORKED! (see third picture) Tank is much clearer. But not "crystal clear" No fish were harmed. So I give it five stars. Cloudiness can have many causes and can be hard to deal with. Epecting this one inexpensive solution to do the whole job in most cases isn't realistic. In my case, I know there is more for me to do. Partial water changes more often. Less food. Leave the light on much less. It may be a bacterial problem and my HOB filter's bag of biological pellets may have been messed up (out of the water too long) a few weeks ago. Extreme water changes could be the wrong thing to do. It may clear up in another week or two. Patience. Review: Works great! - This clarifier works great. When I use it in our fish tank it clears up all cloudiness in just a few hours. It does not affect our fish at all and makes the water look crystal clear. Its reasonably prices and we will continue to purchase in the future. ## Features - FOR FRESHWATER aquariumS Quickly clears cloudy or hazy water caused by overfeeding gravel dust and other minute suspended particles - CLUMPING ACTION Causes small suspended particles to quickly clump together to settle or be removed during normal power filter operation - WORKS ON SOFT WATER Safe for fish even in very soft water (low kH) conditions - USAGE 1 teaspoon treats 10 gallons of water - Included Components: Tetra Water Clarifier (8.45 Oz) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002DVWSVI | | Allergen Information | Gelatin Free | | Best Sellers Rank | #17,238 in Pet Supplies ( See Top 100 in Pet Supplies ) #128 in Aquarium Water Treatments | | Brand | Tetra | | Brand Name | Tetra | | Customer Reviews | 4.5 out of 5 stars 3,856 Reviews | | Global Trade Identification Number | 00046798771364 | | Included Components | Tetra Water Clarifier (8.45 oz) | | Item Form | Liquid | | Item Highlight | Quickly Clears Cloudy Or Hazy Aquarium Water, 1 Teaspoon Treats 10 Gallons Of Water, For Use In Freshwater Fish Tanks | | Item Type Name | Clears Cloudy Aquarium Water, Safe to Use with Fish and Plants, For Fresh Water | | Item Weight | 8.32 ounces | | Liquid Volume | 8.45 fluid ounces | | Manufacturer | Tetra | | Manufacturer Part Number | 77136 | | Model Number | 77136 | | Number of Items | 1 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 046798771364 616312461240 | | Unit Count | 1 Fluid Ounces | | Warranty Description | See label | ## Product Details - **Brand:** Tetra - **Item Form:** Liquid - **Item Weight:** 8.32 ounces - **Liquid Volume:** 8.45 fluid ounces - **Number of Packs:** 1 ## Images ![Tetra Water Clarifier Treatment for Aquariums, 8.45 oz - Image 1](https://m.media-amazon.com/images/I/719dTKZ7BDL.jpg) ![Tetra Water Clarifier Treatment for Aquariums, 8.45 oz - Image 2](https://m.media-amazon.com/images/I/81lJouaGbZL.jpg) ![Tetra Water Clarifier Treatment for Aquariums, 8.45 oz - Image 3](https://m.media-amazon.com/images/I/817DQ3uo2tL.jpg) ![Tetra Water Clarifier Treatment for Aquariums, 8.45 oz - Image 4](https://m.media-amazon.com/images/I/81frl6eVwlL.jpg) ![Tetra Water Clarifier Treatment for Aquariums, 8.45 oz - Image 5](https://m.media-amazon.com/images/I/61SAVVcL9kL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Added it to my 60-gallon tank - before and after pictures *by A***. on May 10, 2023* Berfore: My tank is cloudy, probably from having its light on too much, from overfeeding and from algae. When I remove algae with a sponge and a scraper it's going to float and mess up the water a little. Did a 25 percent water change and put new Poly-fill in my Seachem Fluval 75 HOB filter. Then this evening at 7 pm I took a picture and added 30 ml of Tetra Water Clarifier to the water. (That was easy to do because the bottle has a very small opening and there are raised lines on its side each indicating 10 ml. So I kept pouring until the level was down three lines.) AFTER: It's five days later. After 48 hours I did a 25 percent water change and added another 30 ml dose. Then 48 hours later a third dose, changing my Poly-Fill filter, which had already tra[[ed much fine "stuff". IT WORKED! (see third picture) Tank is much clearer. But not "crystal clear" No fish were harmed. So I give it five stars. Cloudiness can have many causes and can be hard to deal with. Epecting this one inexpensive solution to do the whole job in most cases isn't realistic. In my case, I know there is more for me to do. Partial water changes more often. Less food. Leave the light on much less. It may be a bacterial problem and my HOB filter's bag of biological pellets may have been messed up (out of the water too long) a few weeks ago. Extreme water changes could be the wrong thing to do. It may clear up in another week or two. Patience. ### ⭐⭐⭐⭐⭐ Works great! *by P***S on July 19, 2026* This clarifier works great. When I use it in our fish tank it clears up all cloudiness in just a few hours. It does not affect our fish at all and makes the water look crystal clear. Its reasonably prices and we will continue to purchase in the future. ### ⭐⭐⭐⭐⭐ Wow! Talk about fast acting! *by C***L on October 8, 2022* I've had a Fluval Edge six gallon aquarium for decades, like since whenever they first went on sale. Years ago I had huge tanks. No more. I am good with my fish. Few deaths. Lots of fun. Last November I decided that as the New York City area was collapsing, I'd sell my house and move to Arizona. That evolved donating my Cherry Barbs to the local aquarium store, emptying my tank and moving. It took me awhile to set up the tank again but when I did, I bought more Cherry Barbs in the local pet store. All was well for a short while until one of the newly arrived Cherry Barbs died behind a rock. By the time I found it, it was pretty well decomposed. I got it out of the tank, changed the filter stuff and did a 1/3 water change. At some point the water began to cloud and no amount of water changing or filter cleaning could clear it. I can only suggest it was the dead barb that started this cloudiness off. Can't say for sure. Anyway, something had to be done so I read reviews of all the aquarium water clarifiers on the market and decided to give Tetra a shot. It seemed the least toxic. I was determined not to over do it. Six gallon tank minus room for gravel, a rock and a fake plant. If a teaspoon is the right amount for a ten gallon tank, I figured I'd try half a teaspoon for this one. I measured, I dumped an I hoped for the best. An hour later the water was totally clear and the fish are fine! It's like a different tank. I'll give it awhile and later today I'll clean out the filter. This stuff is HIGHLY recommended by me. ## Frequently Bought Together - Tetra Water Clarifier, Aquarium Treatment Solution, 8.45 oz, Clears Cloudy Aquarium Water, Safe to Use with Fish and Plants, For Fresh Water - Tetra 77140 EasyBalance PLUS Water Conditioner, 16.9-Ounce - Tetra Fish Tank Water Conditioner and Dechlorinator, Aquasafe Plus, Fresh Water and Marine Aquariums 33.8-Ounce --- ## 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.sk/products/4097749-tetra-water-clarifier-treatment-for-aquariums-8-45-oz](https://www.desertcart.sk/products/4097749-tetra-water-clarifier-treatment-for-aquariums-8-45-oz) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-25*