HomePet SuppliesFish & Aquatic PetsAquarium AccessoriesWater Quality Testing & Treatment Water Quality Testing & Treatment Filter Showing all 3 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sort by editor review ARKA Aquatics myAqua190 reverse osmosis system for up to 190 litres per day, filters up to 99% of pollutants, salts and bacteria from the water, ideal for any saltwater and freshwater aquarium, £37.17 Fritz Aquatics Dark Water Almond Leaf Extract for Betta’s 4 oz £12.50 Tetra Test 6-in-1 Strips Aquarium to Test 6 Essential Water Quality Parameters in Less Than 60 Seconds, Pack of 25 £13.71 Original price was: £13.71.£11.42Current price is: £11.42. 17%