Fish & Aquatic Aquarium Water Treatments
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Overview Seachem Alkaline Buffer is a non-phosphate additive designed to gently raise and help stabilize pH in freshwater aquariums. It’s well-suited for planted tanks and very hard water where phosphate buffers can pose algae or cloudiness concerns. The product targets a pH range from...
- £18.39
- £18.39
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Overview Seachem Prime 50mL is a compact water conditioner designed for saltwater aquariums. Its small bottle makes it a handy companion for routine maintenance and occasional ammonia spikes, helping keep your tank’s health in check while you manage the cause. What Prime does Prime...
- £18.42
- £18.42
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Clearer Water Starts Here Seachem Clarity is a water clarifier designed for both marine and freshwater tanks. For over three decades, Seachem has combined science and hobbyist passion to create reliable products that help you enjoy a clearer, healthier aquarium. Clarity works by gathering...
- £21.47
- £21.47
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SunGrow Betta Leaves bring a natural, all-in-one addition to your freshwater setup. Each pack contains 10 large Indian Almond leaves, designed to fit 8 inches long, making it easy to create a sensory-rich habitat in your betta tank. Creating Habitat and Color In the...
- £17.89
- £17.89
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Overview Seachem Prime is a complete, concentrated conditioner designed for both freshwater and saltwater tanks. It targets chlorine and chloramine in tap water, helping to establish a safe starting point for your aquatic life. Built on Seachem's science-driven philosophy, Prime benefits from a long...
- £16.88
- £16.88
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Overview Seachem Prime is a complete, concentrated conditioner for both freshwater and saltwater aquariums. It removes chlorine and chloramine from tap water and helps your biofilter begin processing ammonia, nitrite, and nitrate while these compounds are detoxified for up to 48 hours. Backed by...
- £28.88
- £28.88
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Seachem Flourish Potassium 500ml — Potassium Supplement for Planted Aquariums Seachem Flourish Potassium 500ml is a potassium supplement designed for natural freshwater planted aquariums. Potassium is a key nutrient that supports robust growth in aquatic plants, helping leaves stay vibrant and stems stout in...
- £27.65
- £27.65
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Jumpstart Your Aquarium Cycle Starting a new freshwater or saltwater setup is exciting, but the early days can be delicate. Ammonia and nitrite from fish waste can rise quickly, stressing aquatic life. API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 8-Ounce Bottle delivers...
- £25.70
- £25.70
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Overview FZONE Root Tabs bring targeted nutrition to freshwater aquariums, feeding plant roots directly while keeping fish and shrimp safe. With steady nutrient delivery, you may notice stronger root systems, healthier crypts, vibrant sword plants, and denser carpeting, all within a balanced tank environment....
- £26.11
- £26.11
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Magnesion: The magnesium boost reef tanks can rely on Brightwell Aquatics MAG250 Magnesion Liquid Salt Water Conditioner is a highly concentrated ionic magnesium solution designed for reef aquariums. It is formulated to help manage the delicate balance between calcium and carbonates, supporting the conditions...
- £27.87
- £27.87
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All-in-One Filtration for Freshwater and Saltwater Aquariums Elevate your aquarium fidelity with Fluval's Media Maintenance Kit, designed to pair seamlessly with the AC50 Power Filter. This three-piece filtration trio combines mechanical, biological, and chemical filtration in a single, ready-to-use package. Expect water that appears...
- £25.13
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Seachem Denitrate 500ml — a practical nitrate and organic removal solution Maintaining crystal-clear water in both freshwater and reef setups often depends on more than routine filtration. Denitrate 500ml from Seachem is designed as a high-porosity biological media that slots into your filter to...
- £21.01
- £21.01
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Enhance Mineral Balance for Plant Health Seachem Equilibrium 600g is a dedicated mineral supplement designed for planted aquariums. It delivers essential calcium, magnesium, and potassium without any sodium chloride, making it a thoughtful choice for environments where plants and delicate species thrive on a...
- £29.91
- £29.91
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Overview Ultralife Reef Red Slime Stain Remover offers a time-tested approach for tackling stubborn algae-related stains in home aquariums. The formula blends natural cellular matter with carefully chosen biological accelerators and supplements designed to address red, black, and blue-green cyanobacteria in a non-abrasive way....
- £27.13
- £27.13
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Hikari Chloram-X Ultimate — All-in-One Water Conditioner for Your Aquarium Meet Hikari Chloram-X Ultimate, a 16-ounce bottle designed to simplify how you care for your aquarium water. Marketed as the world’s first full-function water conditioner, it aims to combine multiple essential tasks into a...
- £27.42
- £27.42
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Overview GROTAUS ICH-X ICH & Fungal Treatment is a ready to use liquid concentrate crafted for hobbyists who want a practical path to managing parasites in ponds and both freshwater and marine aquariums. The formulation emphasizes safety and speed, aiming to deliver observable progress...
- £29.29
- £29.29
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Overview Seachem Flourish Tabs are a growth-focused root-feeding solution for planted aquariums. Designed to deliver nutrients directly to the root zone, these time-release tablets support the development of strong root systems and vibrant foliage. When used as part of a balanced tank setup, they...
- £22.01
- £22.01
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Overview Seachem Flourish Glue is designed for aquarium hobbyists who want reliable, easy bonding for plants, moss, and small decor pieces. Built for performance at an affordable price, this adhesive supports fast, in-tank applications without compromising the look of your setup. Key Benefits Performance-driven...
- £20.22
- £20.22
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Overview ParaGuard is an aldehyde-based parasite control product designed for fish and aquarium filtration systems. It contains 10% by weight of active ingredients and combines a proprietary blend of aldehydes with malachite green and fish-protective polymers. Unlike some formalin-based medications, ParaGuard contains no formaldehyde...
- £22.01
- £22.01
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Seachem Flourish Freshwater Plant Supplement is designed to support the vibrant life of a natural freshwater aquarium. This 500 ml bottle delivers a complete blend of micro elements, trace elements, and other nutrients that planted tanks rely on to thrive in home environments. What...
- £23.45
- £23.45
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Fish & Aquatic Aquarium Water Treatments for UK pet owners — 302 products with free UK delivery. Browse the full range below; stock and prices update live.
Popular picks include Seachem Prime Fresh & Saltwater Conditioner – Chlorine &; Seachem Prime Fresh & Saltwater Conditioner 2 L – Chlori; Seachem Prime Water Conditioner 2 Liter – Safe Tap Water.























