The First Step Clean-N-Fill Pre-Filter
The First Step Clean-N-Fill has 5 stages of filtration, uses ion exchange resins, and also purifies. It is equipped to handle extremely hard, dirty water and connects to a standard garden hose. Each filter is good for 3 fills.
For hot tub model: J-480, J-470, J-465, J-460, J-385, J-375, J365, J-355, J-345, J-335, J-325, J-315, J-230, J-220, J-210