Back Aquarium salts API, Interpet and Supa, red sea   Crystal Sea Marine Mix measure cup. £2.40 One level cupful of marine salt equal the right amount for 4 gallons of marine water @ 1.023 specific gravity     RedSea, Sea Salt 25kg (750ml) Introduction to Red Sea Salt: Red Sea offers a premium sea salt mixture based on natural sea salt harvested from the waters of the exotic Red Sea by solar evaporation techniques. Red Sea Salt is enriched with other refined minerals to faithfully replicate natural seawater for your aquarium. Used for over 10 years by hobbyists and professionals alike, Red Sea Salt has become famous for its favorable effect on invertebrates. Red Sea Salt is the only salt formulation offered today that is derived principally from a living sea. Special Characteristics of Red Sea Salt: A single, chemically balanced formula to support the most delicate marine life Suitable for marine fish and invertebrates from every sea and ocean Reaches a stable, natural pH shortly after mixing No nitrates or phosphates Produced by a small batch process to ensure homogeneity of salt mixture Every batch is biologically and chemically tested for quality control Suitable for a small water change or a complete new aquarium set-up Can be mixed to any desired salinity. 1.4 lb dissolved in 5 gal of Reverse Osmosis (R.O.) water at 750F (1Kg dissolved in 30 litres at 250C) will produce a seawater solution as follows: Specific gravity 1.021 pH 8.4 (after 2 hrs mixing or aerating) Alkalinity 2.2-2.5 milli equivalents/litre. One level cup of salt produces exactly 3.75 US gallons of seawater solution at a specific gravity of 1.021.   red sea salt 4kg  £9.99   red sea salt 10kg  £29.50   red sea salt 20kg  £49.50   red sea salt 25kg  £59.50     Instant Ocean 25kg (750ltr) The synthetic salt of choice of nearly every U.K. public aquarium, including: @ Bristol, Blue Planet, Chester Zoo, Horniman Museum, Leeds Botanical Gardens & Tropical World, London Aquarium, London Zoo (Web of Life), SeaLife Centre (Southend-on-Sea) and Seaquarium.   25kg  £68.50 INSTANT OCEAN Instant Ocean is a complete formula that includes every necessary major, minor and trace elements blended to simulate natural seawater. Only Instant Ocean gives you every nutrient necessary for marine organism growth and development. The new, improved formula is even faster dissolving than ever. The best selling salt in the world. Supa Tonic Salt 250g. When setting up a new fresh water aquarium Supa Tonic Salts are ideal or they can be used to condition the water for fish originating from areas with natural brackish water. It can also be used to combat fungus and other diseases and as a sterilising solution. If you are looking to hatch brine shrimp eggs then Supa Tonic Salts can be used to create ideal conditions.     250g  £1.50     Interpet Aqualibrium A Physiological Salt for the Aquarium with built in pH buffer. Aqualibrium is a unique balanced formulation of essential physiological salts for promoting the health of freshwater fish, safeguarding against disease and stabilising water conditions, including the essential pH value. It is one of the aquarists most versatile water treatments and can be used in a variety of ways: (1) As a general aquarium tonic and mild pH buffer, (2) To help minimise the effects of stress on fish, (3) As a supportive measure when treating disease. Aqualibrium can be used in conjunction with any other of the Interpet aquarium treatments. In many cases, a supportive does of Aqualibrium will enhance the effectiveness of aquarium treatments     260g  £1.99     Sera Mineral Salt sera mineral salt contains the minerals which are present in natural waters, in the biologically correct amounts, which are required for enriching mineral-poor water (e.g. R/O water). Water conditioned with sera mineral salt can be used immediately.     Sera Salt 105ml  £3.99   Sera Salt 280ml  £10.49