This Hot Tub Non-Chemical Filter is Non-chemical hot tub “maxi” power filtering disk. Just put on top of your water return and enjoy clean, chemical-free water. For hot tubs up to 400 gallons. Typically lasts 3 – 5 months. NO INSTALLATION! NO PLUMBING!
This is a 4 inch disk.
For more info on this technology click on hot tub and natural pool filters.
YOU MAY RETURN ANY FRIENDSOFWATER>COM PURCHASE FOR A FULL REFUND INCLUDING ORIGINAL SHIPPING CHARGE.