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PetSafe Bark Dog Collar will keep excess barking under control, and is designed with 15 levels of static stimulation that help discourage nuisance barking and whining. The PetSafe Bark Dog Collar automatically finds the perfect setting to help your dog learn to stop barking. The correction levels of the collar automatically increase with each bark until barking stops. The static correction is annoying yet safe for dogs. A built-in safety feature automatically shuts the collar off for 3 minutes if your dog barks more than 15 times within an 80 second period. As your dog learns to bark less, correction levels are reduced. This collar is a great choice for dogs weighing 8 lb. or more and are more than 6 months old. Your pet deserves the best. Trust PetSafe to help keep your pet healthy, safe and happy. Features: Gentle Static Correction with its 15 levels of static correction; the static feeling is surprising but harmless No False Activation with its sound and vibration sensors that ensure the collar only activates when the dog wearing it barks Progressive levels as the collar starts with the lowest level of static and increases to the next level each time your dog barks; the collar shuts off automatically after 80 seconds Waterproof and will hold up to rain, snow, mud and other outdoor conditions Fits most dogs weighing 8 lb. or more and the collar strap fits neck sizes up to 27" (68.58cm) Replaceable Batteries - he bark collar uses a 6-volt alkaline battery

API Ammonia Fresh Water & Saltwater Aquarium Test Strips quickly and easily checks your aquarium's ammonia levels. Fish continually release ammonia into the aquarium through their gills, urine and solid waste. Uneaten food and decaying organic matter also add ammonia to the water. Ammonia is toxic to fish and can cause gill damage, stress and death. Regular testing is recommended because ammonia levels can build quickly due to fish waste and uneaten food. Safe for use in fresh and salt water. Features: Monitors water quality and prevents invisible water problems that can be harmful to fish Dip test strips into aquarium water and check colours for fast and accurate results Use: Simply dip the test strip into the water, then compare the results with the precise, easy-to-read colour-coded chart to determine if any action should be taken. The chart includes recommendations on how to treat the water and neutralize ammonia.