Tetra SafeStart Plus, For Newly Set-Up Fish aquariums, 100 ml, 3.38-Ounce Product Description Tetra SafeStart Plus creates a biologically active environment to allow fast introduction of fish into newly set-up fish aquariums. Tetra SafeStart Plus reduces dangerous ammonia and nitrite and prevents new tank syndrome for a healthy start for fish in all freshwater aquariums. Contains live bacteria that start working immediately to provide a safe environment for new fish. Tetra SafeStart Plus can also be used after a water change, when adding fish or after medicating.?Cycling? your tank means growing the correct, healthy bacteria on a new filtration system to remove dangerous toxins. New filters are sterile and take 30 to 40 days for bacteria to naturally form. This concentrated formula speeds up the cycling process by accelerating the establishment of beneficial bacteria from the start for instant, safe results. Since 1951, Tetra has developed the world?s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need?-from a large variety of quality fish food and innovative equipment to test kits and decor.