Keeper aluminum anodes are not like regular aluminum. They are made from a special alloy with about 5% zinc and a tiny bit of indium. This mix stops the oxide layer from forming, which makes Keeper anodes much better at protecting your boat.
Aluminum anode alloy provides more protection and lasts longer than zinc. It works well in freshwater and is safe for salt water. Aluminum is the only anode that is safe for all applications.
Here’s why Keeper anodes are the best choice:
– Better Protection: Keeper has a higher protection voltage than zinc, which is very important for protecting aluminum parts like outboard motors.
– Longer Life: Keeper anodes last 30-50% longer than zinc anodes.
– Works in All Water Types: Zinc anodes can stop working in freshwater after a few months, but Keeper anodes stay active in fresh, brackish, and salt water.
– Reactivates After Air Exposure: Keeper anodes work right away when put back in water, while zinc anodes need to be cleaned first.
– Environmentally Friendly: Keeper anodes have less zinc and are better for the environment. Zinc is a toxic metal that pollutes the water, and some places are even banning zinc anodes.
– Lighter Than Zinc: Keeper anodes are much lighter than zinc anodes, making them easier to handle.
There is no situation where zinc is better than aluminum!
Caution with Magnesium Anodes: Magnesium is very active on the Galvanic scale. It can be used in freshwater, but it can over-protect aluminum in salt or brackish water, causing damage.
Keeper anodes are made to meet military standards and contain about 95% aluminum, 5% zinc, 0.02% indium, and less than 0.3% of other trace elements. They are cadmium-free.
Using Keeper aluminum anodes is the best way to protect your boat in any type of water.