Is it better to use an aluminum anode or a zinc anode in seawater or fresh water

The difference between the two is that 1. The current of the aluminum anode is large, the technology of the aluminum is relatively fast, the technology of the aluminum is unstable, the aluminum passivation is not self-corrosion, and now the alloy of the aluminum titanium film indium cadmium is softened, and the corrosion is accelerated. 2. The number of blocks with small zinc anode current is more, the time is longer, zinc is more active, and the resistivity is low. Specifically, you can consult ladbrokes anticorrosion manufacturer. You can tell him the specific parameters and he can give you a better proposal.