5" diameter and is best for medium dogs

Ingredients see packaging

Easy Maintenance: The heater is built for ease of use

HEALTHY SHINE

Tetra SafeStart Plus, For Newly Set-Up Fish aquariums Assorted Color X-Large Small Animals Supplies 5" diameter and is bestAbout this item PREVENTS NEW TANK SYNDROME Accelerates of the establishment of healthy bacteria in newly set up freshwater aquariums REDUCES TOXINS Helps remove dangerous levels of ammonia and nitrite ACCELERATES TANK CYCLING Helps establish a healthy tank from the start for instant results FAST ACTING Starts working immediately to provide a healthy environment for new fish without a long wait USAGE Treat when setting up a new aquarium after a water