Filter Pump: Physically removes debris and particles through a filtration system. It needs regular cleaning or filter replacement.

Portable Ozone Cleaner: Uses ozone gas to sanitize water by killing bacteria, viruses, and algae at a microscopic level. It doesn’t filter debris, but it’s a chemical-free way to purify water.

Best setup:

Many users combine both—a filter pump for debris + ozone cleaner for sanitization.