Try diluting 1 cup of seawater in 3 cups of plain water and give it to your pets. First give them that in a second bowl to give them the choice. In a few days, see how they prefer the diluted seawater. Every week take note of your pet improvements. If you don't have seawater available, the next best thing is diluting a level tablespoon of sea salt in a liter of plain water. Those are the amounts used by those of us studying the science explained at oceanplasma.org but smaller quantities have also given good results.