Some experts will tell you to never let the salt drop below the water line. But if you’re busy and it happens, don’t panic. Just add a bag of salt and let the softener do its thing. It’s not a crisis—it’s a gentle reminder that your home appliance needs a snack.
And if you really want to get fancy, buy kosher salt in bulk? No, that’s a joke. Don’t do that. Stick to the water softener aisle. Your marriage to your water heater depends on it.