--- product_id: 48209554 title: "Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water" brand: "blagdon" price: "¥11197" currency: JPY in_stock: true reviews_count: 13 category: "Blagdon" url: https://www.desertcart.jp/products/48209554-blagdon-clear-pond-water-treatment-1-litre-clears-dirty-green store_origin: JP region: Japan --- # 100% wildlife & fish safe Treats 20,000L water Visible results in hours Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water **Brand:** blagdon **Price:** ¥11197 **Availability:** ✅ In Stock ## Summary > 💧 Clear water, clear mind—elevate your pond game effortlessly! ## Quick Answers - **What is this?** Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water by blagdon - **How much does it cost?** ¥11197 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/48209554-blagdon-clear-pond-water-treatment-1-litre-clears-dirty-green) ## Best For - blagdon enthusiasts ## Why This Product - Trusted blagdon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Dosing:** Accurate dosing chamber ensures mess-free, tailored treatment for ponds up to 20,000 litres—effortless pond perfection. - • **Eco-Friendly Formula:** Naturally safe for all pond fish, plants, and wildlife—because your ecosystem deserves the best care. - • **Trusted by Thousands:** Over 3,000 five-star reviews prove it’s the go-to solution for millennial pond enthusiasts who demand results. - • **Filter-Boosting Power:** Enhances mechanical filtration by clumping suspended particles for easy removal—keep your pond sparkling longer. - • **Crystal Clear Confidence:** Rapidly clears green, brown, or cloudy pond water within hours—never miss a moment of your outdoor oasis. ## Overview Blagdon Clear Pond Water Treatment is a fast-acting, natural liquid solution designed to clear green, brown, or cloudy pond water by clumping suspended particles for easy filtration. Safe for all pond fish, plants, and wildlife, it treats up to 20,000 litres per litre and enhances filter efficiency, delivering visible results within hours while maintaining a healthy aquatic ecosystem. ## Description This natural pond treatment rapidly clears green, cloudy, or brown water by clumping suspended particles. It enhances filtration and is safe for aquatic life. Review: I can see clearly now the murky water has gone - Great product, used it before and had no issues There are a few negative reviews on here stating it doesn't work or takes too long to clear so Ill try to expand on when it won't work and what it does The chemicals within this (mainly formaldehyde) bind together the very fine particles of detritus into larger clumps so your filter can catch them where previously they would pass straight through Will it remove muddy water? Chances are no, only a deep clean with a vac and large water changes will clear this, in fact cotton wool will do a better job in this case What is it is best at removing? Suspended algae and detritus floating in the water column. Do I need a pond filter? Yes, this chemical only binds the finer particles together in larger clumps, you still need a filter (50 microns or less) to catch the newly formed clumps Adding pre-rinsed cotton wool to the filter will also do this micron job How do I add it to the pond? I would suggest adding only the correct dosage as stated to the pond once a week, remember it's still formaldehyde, that's the chemical they use to preserve dead bodies Very very slowly add it to a moving water flow, preferably the point furthest from your filter The water will go a slightly cloudy white look, this is due to the chemical instantly binding the larger particles of muck which is why you can now see them How long will it remain in the water? Depending on your filter/pump flow rate I would expect 10x the volume of the pond / pump speed Eg. if a pond is 10,000 liters in size, multiply this by 10 = 100,000 and your pump is running at 20,000 liters per hour 100,000 ÷ 20,000 lph = 5 hours to clear Note* during the dosing cycle, ensure you keep checking the filter, if it is a 50 micron or finer, it will block quite quickly requiring regular cleaning of the filter, this is a must during the dosing cycle (A Micron is a millionth of a meter, So a 1,000 micron filer will have 1mm holes in it, 50 micron filter is, you guessed it, 0.05mm holes, the smaller the number the smaller the holes) I did shop around and even found it to be cheaper from desertcart than any local supplier which surprised me. Review: Good stuff 👍 - Use this most of the time along with barley straw in my pound works well. I also use in my aquarium but have to get the right dosage exactly or will kill fish, find its much better to use than most of the proper aquarium cleaners which are no good and way over priced will cloud up but that shows it's working within 24hrs water is really really clean when you empty filters use will see results for yourself but as said Got to get dosage right, I have a 200lt best if you know your literage in tank then you get the dosage right, if not have to do by size and that is harder to work out i did get it wrong at first now I don't and a bottle last a long time than others. ## Features - Causes serious eye irritation. - Causes skin irritation. - Contains benzisothiazolone. May produce an allergic reaction. - Contains sensitizing substances. May produce an allergic reaction. - CLEARS DIRTY POND WATER - Clear Pond rapidly clears green, cloudy, dirty or milky water by clumping together suspended particles causing them to sink to the bottom of the pond or to become trapped in the filter - FAST ACTING - you should expect to see great results within just a few hours - NATURALLY SAFE - Clear Pond is harmless to filters and all species of pond fish, plants and water using wildlife - ENHANCES FILTRATION - Clear Pond enhances mechanical filtration in your pond to help keep your water crystal clear - ACCURATE DOSING CHAMBER - the accurate dosing chamber makes for easy, no mess measurement of treatment to suit the size of pond – shake bottle well for best results ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002SQEMQW | | Best Sellers Rank | 1,820 in Garden ( See Top 100 in Garden ) 12 in Water Garden & Pond Treatment | | Brand | Blagdon | | Brand Name | Blagdon | | Country Of Origin | China | | Customer Reviews | 4.1 out of 5 stars 3,188 Reviews | | Included Components | 1 x bottle of treatment | | Item Form | Liquid | | Item Type Name | Pond Clear Water Treatment | | Item Weight | 1.14 Kilograms | | Item form | Liquid | | Item weight | 1.14 Kilograms | | Liquid Volume | 1000 Millilitres | | Liquid volume | 1000 Millilitres | | Manufacturer | Blagdon | | Manufacturer Part Number | 2739 | | Model Number | BD2739 | | Number of Items | 1 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Safe for all pond fish | | UPC | 755349027392 | | Unit Count | 1 count | | Unit count | 1 count | ## Product Details - **Brand:** Blagdon - **Item form:** Liquid - **Item weight:** 1.12 Kilograms - **Liquid volume:** 1000 Millilitres - **Number of Packs:** 1 ## Images ![Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water - Image 1](https://m.media-amazon.com/images/I/81tL3OiY1rL.jpg) ![Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water - Image 2](https://m.media-amazon.com/images/I/81H6JIK5+8L.jpg) ![Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water - Image 3](https://m.media-amazon.com/images/I/61+jKq5dPWL.jpg) ![Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water - Image 4](https://m.media-amazon.com/images/I/41xgSzXByKL.jpg) ![Blagdon Clear Pond Water Treatment, 1 Litre, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 1L, Treats 20,000 Litres of Water - Image 5](https://m.media-amazon.com/images/I/61yXj1fgW3L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: How much do you add to a bucket ogf water** A: You can do this either way you can use in one bucket of pond water and spread all over the pond, or as I do. Is put half in one bucket and spread over the pond and then wait for an hour to let the first bucket circulate then do the second half of the solution as this seems to work better many thanks gary **Q: Will this work for a small pond with no pump or filtration system?** A: My pond is small, under 200 gallons. I only have a small capacity £15 pump. No doubt the Clear Pond works so much better with a pump to help even distribution of the mixture BUT if you mix the correct amount thoroughly in a couple of gallons of water, then spread evenly with a rose attached to your watering can, then I see no reason for it not to work after a fashion but a pump is certainly a preferable addition even if like mine. My pond is nice ands clear after 8 weeks but it is early days yet. I have not added fish yet and I do have the pump on for 2-3 hours a day and I have a good amount of oxygenator plants which must help. Good luck.DBS **Q: Can i leave my fish in pond while i use pond clear** A: One word...Yes...its a fantastic product. **Q: Anyone know if this can also be used in a small indoor cold water fishtank?** A: Not sure about that. It clearly says Pond and to reduce levels for a small indoor tank could be difficult. Wouldn’t it be better to empty water, clean tank and put in fresh. ## Customer Reviews ### ⭐⭐⭐⭐⭐ I can see clearly now the murky water has gone *by A***E on 27 October 2017* Great product, used it before and had no issues There are a few negative reviews on here stating it doesn't work or takes too long to clear so Ill try to expand on when it won't work and what it does The chemicals within this (mainly formaldehyde) bind together the very fine particles of detritus into larger clumps so your filter can catch them where previously they would pass straight through Will it remove muddy water? Chances are no, only a deep clean with a vac and large water changes will clear this, in fact cotton wool will do a better job in this case What is it is best at removing? Suspended algae and detritus floating in the water column. Do I need a pond filter? Yes, this chemical only binds the finer particles together in larger clumps, you still need a filter (50 microns or less) to catch the newly formed clumps Adding pre-rinsed cotton wool to the filter will also do this micron job How do I add it to the pond? I would suggest adding only the correct dosage as stated to the pond once a week, remember it's still formaldehyde, that's the chemical they use to preserve dead bodies Very very slowly add it to a moving water flow, preferably the point furthest from your filter The water will go a slightly cloudy white look, this is due to the chemical instantly binding the larger particles of muck which is why you can now see them How long will it remain in the water? Depending on your filter/pump flow rate I would expect 10x the volume of the pond / pump speed Eg. if a pond is 10,000 liters in size, multiply this by 10 = 100,000 and your pump is running at 20,000 liters per hour 100,000 ÷ 20,000 lph = 5 hours to clear Note* during the dosing cycle, ensure you keep checking the filter, if it is a 50 micron or finer, it will block quite quickly requiring regular cleaning of the filter, this is a must during the dosing cycle (A Micron is a millionth of a meter, So a 1,000 micron filer will have 1mm holes in it, 50 micron filter is, you guessed it, 0.05mm holes, the smaller the number the smaller the holes) I did shop around and even found it to be cheaper from Amazon than any local supplier which surprised me. ### ⭐⭐⭐⭐ Good stuff 👍 *by K***. on 14 April 2026* Use this most of the time along with barley straw in my pound works well. I also use in my aquarium but have to get the right dosage exactly or will kill fish, find its much better to use than most of the proper aquarium cleaners which are no good and way over priced will cloud up but that shows it's working within 24hrs water is really really clean when you empty filters use will see results for yourself but as said Got to get dosage right, I have a 200lt best if you know your literage in tank then you get the dosage right, if not have to do by size and that is harder to work out i did get it wrong at first now I don't and a bottle last a long time than others. ### ⭐⭐⭐⭐⭐ Excellent product *by C***F on 21 June 2024* I only have a small nature pond which looked dirty and pea soup green. I bought this product to hopefully try and clear it. It only holds 110 litres so I measured the correct amount, 5ml, mixed it with water and poured it in. Nothing happened for about a week then slowly it started to clear and by the end of the second week it is crystal clear. The bottle is 250 ml which is obviously enough to treat it 50 times ( should it need it). So, a great product at a good price. --- ## 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.jp/products/48209554-blagdon-clear-pond-water-treatment-1-litre-clears-dirty-green](https://www.desertcart.jp/products/48209554-blagdon-clear-pond-water-treatment-1-litre-clears-dirty-green) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-29*