--- product_id: 60497850 title: "HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg" brand: "hydra" price: "1335.83 DT" currency: TND in_stock: true reviews_count: 10 category: "Hydra" url: https://www.desertcart.tn/products/60497850-hydra-crystal-treats-upto-50-000-litres-pond-algae-green store_origin: TN region: Tunisia --- # Rapid algae flocculation Eco-friendly & biodegradable Treats up to 50,000L water HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg **Brand:** hydra **Price:** 1335.83 DT **Availability:** ✅ In Stock ## Summary > 💦 Clear your pond, clear your mind — don’t let green water cramp your style! ## Quick Answers - **What is this?** HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg by hydra - **How much does it cost?** 1335.83 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/60497850-hydra-crystal-treats-upto-50-000-litres-pond-algae-green) ## Best For - hydra enthusiasts ## Why This Product - Trusted hydra brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Safe Formula:** Biodegradable and safe for fish, plants, and all pond wildlife—no ecological disruption. - • **Filter-Friendly Action:** Clumps algae for easy removal via your existing filtration system—keep pumps & UV running for best results. - • **Crystal Clear in 24 Hours:** Rapidly transforms pea-soup green water into sparkling clarity overnight. - • **Massive Coverage Capacity:** One 5kg pack treats up to 50,000 litres—perfect for large ponds and water gardens. - • **Long Shelf Life & Versatile:** Stable for 3 years and safe on concrete or synthetic liners—your all-in-one pond clarity solution. ## Overview HYDRA Crystal Treats is a powerful, mineral-based algaecide designed to rapidly clear green water algae in ponds up to 50,000 litres. Its eco-friendly, biodegradable formula safely flocculates single-cell algae for easy filtration without harming fish, plants, or pond equipment. Ideal for large ponds, it works best with active filtration and UV systems, delivering crystal-clear water in as little as 24 hours while maintaining ecological balance. ## Description Product Description Hydra Crystal USAGE RATES Dilution 1:10,000 1 gm treats 10 litres of water (2.2 gallons). 1 kg treats 10,000 litres of water(2,200 gallons). 5 kg treats 50,000 litres of water (11,000 gallons). 20 kg treats 200,000 litres of water (44,000 gallons). Use with water filtration system Leave UV lights working during treatment Make sure to clean up filters before, during and after treatment for best optimum results Rapidly clears green water | Green water treatment What is green water algae? Green water algae is a single-cell organism that lives in the water and turns it pea-soup green. Your hand might disappear if you reach into the water, but you can’t physically pick up the single-cell algae. It’s just too small. (This is different from string algae, which is the gunk you can physically hold). Single-cell algae are one of the most common organisms in the world. It will thrive anywhere there are excess nutrients (nitrites). Single-cell algae are impossible to pick up by hand Most common organisms in the world Makes water appear green ( like pea soup) Easy solution below The Problem Spring sunshine is a welcome change in the weather, but with the onset of warm weather, your clear pond may become green due to unsightly algal growth. The nutrient build-up over the winter months, actively feeding fish in warm weather and sun rays penetrating the pond surface create suitable conditions for phytoplankton to thrive. Phytoplankton or single celled algae make the clear pond water turn green or like pea soup. Algal blooms are not only visually unappealing, excessive algae also compete with fish and other aquatic creatures for dissolved oxygen during the night. On cloudy days when single celled algae are unable to replenish oxygen with photosynthesis, depleted oxygen levels prove harmful to the fish and other water plants. The Solution - Hydra Crystal Hydra Crystal is a unique mineral-based formulation that acts fast on the algal cells causing them to cluster together and descend to the bottom of the pond where they could be picked up by the pond filters. It is important to have the filters running and regularly cleaned during the treatment. Hydra Crystal used in combination with Hydra Bio Aquatic Boost keeps the single-celled algae from returning. Hydra Bio Aquatic Boost is blend of favourable bacteria that feeds on excess nutrients (on which algae survive) and thwarts algae growth. Calculate the exact amount of Hydra Crystal required for your pond Hydra Crystal acts immediately by latching onto the algal cell and causing them to clump together, the flocculated algal mass can then be removed through the filter system. Keep the aeration pumps and UV lights working during the green water treatment. Clean the mechanical filters prior to the treatment and to get best results frequently clean the filters (every other day). How does Hydra Crystal Work and How to Use Apply Hydra Crystal near the pump outlet for thorough mixing in the pond or Mix with enough tap water and add as slurry to the pond Hydra Crystal acts fast on algal cells causing them to cluster together and sink to the bottom, where they get picked up by pond filters. Review: Clear water - Hydra crystal green algae is a fantastic product. Clears green coloured water from your pond in 24 hours. Just mix it with pond water, add to pond, which makes the pond a milky colour and overnight the pond becomes clear again. Fantastic product. Review: Only use if you have a bottom drain or pond vacum - Excellent product. Did exactly what I needed it to do, however, the waste that is generated and sinks to the bottom of the pond is not very mobile and requires manual removal with a net. I don't think you would have any trouble if you had a bottom drain. The algae in my pond is clear, but I now have brown water issue instead of a green one! Hopefully in time, the bacteria will sort this out. ## Features - Rapid Cleaning: Crystal by Hydra is a cleaner that rapidly acts as a pond treatment for green water to give crystal clear water. This algaecide contains powerful detergents and sequestrants that rapidly dissolve and solubilize outdoor contamination. - Safe to Use: Special green water treatment formula improves the water quality without disturbing the ecological balance of the pond. Immediately after the product application, scattered single-celled algae flocculate will clump together to be removed through the filter system. - Environment friendly: Crystal is a biodegradable green water treatment that is save for fish, reptiles, birds, invertebrates, mammals, humans, and water plants. Also, it is not harmful for biological filters or pumps installed in the pond. - Multipurpose: Hydra Crystal is the pond treatment that has no damaging effect on concrete surfaces or synthetic liners. It has a shelf life 3 years and 3 Kg pack can treat up to 30,000 litres of water. - Customer Satisfaction: The satisfaction of our customers is our priority. In case of any query related to the Hydra Crystal, feel free to contact us. We will be at your service and try to provide an answer as soon as possible. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01D1OKX5S | | Best Sellers Rank | 50,627 in Garden ( See Top 100 in Garden ) 274 in Water Garden & Pond Treatment | | Brand | HYDRA | | Brand Name | HYDRA | | Customer Reviews | 3.9 out of 5 stars 348 Reviews | | Item Form | Liquid | | Item Weight | 5 Kilograms | | Item form | Liquid | | Item weight | 5 Kilograms | | Liquid Volume | 50000 Litres | | Liquid volume | 50000 Litres | | Manufacturer | Hydra International Ltd | | Target Species | Fish | | Unit Count | 5000 gram | | Unit count | 5000 gram | ## Product Details - **Brand:** HYDRA - **Item form:** Liquid - **Item weight:** 5 Kilograms - **Liquid volume:** 50000 Litres - **Unit count:** 5000 gram ## Images ![HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg - Image 1](https://m.media-amazon.com/images/I/61xcOy0CaOL.jpg) ![HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg - Image 2](https://m.media-amazon.com/images/I/61M3BTURBoL.jpg) ![HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg - Image 3](https://m.media-amazon.com/images/I/81+lx3tYDBL.jpg) ![HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg - Image 4](https://m.media-amazon.com/images/I/81ztjqxgiIL.jpg) ![HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg - Image 5](https://m.media-amazon.com/images/I/81liEk4cGnL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can i use this without a pump/filter and remove the algae with a net?** A: I used this product with pump and filter not sure use it with net but it disappear without net itself **Q: how to apply** A: Put it straight to the pool as long as you have a filter **Q: Can I use this with a hozelock easyclear 9000** A: Yes **Q: Does it clear blanket weed** A: No, it removes green algae (single-celled) not blanketweed. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Clear water *by A***R on 5 August 2023* Hydra crystal green algae is a fantastic product. Clears green coloured water from your pond in 24 hours. Just mix it with pond water, add to pond, which makes the pond a milky colour and overnight the pond becomes clear again. Fantastic product. ### ⭐⭐⭐⭐ Only use if you have a bottom drain or pond vacum *by B***N on 31 May 2023* Excellent product. Did exactly what I needed it to do, however, the waste that is generated and sinks to the bottom of the pond is not very mobile and requires manual removal with a net. I don't think you would have any trouble if you had a bottom drain. The algae in my pond is clear, but I now have brown water issue instead of a green one! Hopefully in time, the bacteria will sort this out. ### ⭐⭐⭐⭐⭐ Excellent *by G***I on 12 July 2025* Excellent. ## Frequently Bought Together - HYDRA Crystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg - Hydra Quartz Blanket Weed Pond Treatment - Blanket Weed Killer for Ponds | Removes Harmful Ammonia from Water | 5 Kg Treats Up to 62,500 Liters --- ## 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.tn/products/60497850-hydra-crystal-treats-upto-50-000-litres-pond-algae-green](https://www.desertcart.tn/products/60497850-hydra-crystal-treats-upto-50-000-litres-pond-algae-green) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-02*