Watkins Tri-X Filter for HotSpring 65 sq. ft. PN 73178

Watkins Tri-X Filter for HotSpring Spa 65 sq. ft. PN 73178 


The Watkins Tri-X filter is 3-dimensional to more effectively filtrate by depth and surface, creating a longer time between cleaning cycles. Each ceramic fiber Tri-X filter provides 65 square feet of filtration. Fits all HotSpring Spas. Watkins PN 73178 (PN on filter 0969601)

This ceramic fiber cartridge filter was introduced in the 2004 Hot Spring high performance spa models. In 2006 the Tri-X became available as a replacement for the common polyester filters (aka paper filters). The unique design enables it to filter twice the water per minute than a common filter. You don’t have to clean it as often either! This filter can replace the 71825 (paper) filter in all 1990-current Hot Spring spa models, 1998-2002 Hot Spot models and all Solana X, RX, SX & TX spa models.

Note: Dishwasher safe! No soap. No drying cycle. (No more spraying off your filters outside in the dead of Winter!). Though the dishwasher rinse is an intermittent cleaning method, we do recommend a deep filter cleaning the FreshWater Filter Cleaning Granules can only provide.



6" Diameter

10.5" Length

2 1/16" Hole  


Related Item:

Ag+ Silver Ion Sanitizing Cartridge 71325 

Five (5) Pack of Tri-X Filters: Special      



We ship within 2 business days (oftentimes same-day). When item closes over a weekend we will ship the next business day. We ship via USPS Priority Mail and/or FedEx Ground. If you prefer faster shipping, please make comment in check out process, or call/email us. We will attempt to accommodate your request. Tracking provided to buyer.


FREE SHIPPING on ORDERS totaling OVER $300 (see listings for details. USA customers only). Tracking information sent to buyer on all orders. Typically we can ship SAME-DAY if order is received by 1:00 PM (MST) on normal business days. Otherwise, we ship within 2 days.

If you DO NOT see an item that you NEED for your Watkins manufactured spa (HotSpring. Tiger River, Limelight, Solana, HotSpot) or Jacuzzi Hot Tub -- please EMAIL US! We may just have it and we can quote you a price: email us at: david@prescottspas.com

How to Find your Spa Serial Number?

Typically, your spa serial number decal will be inside the hot tub equipment compartment, attached to the spa shell wall. It will say the Manufacture Name (Watkins, or Jacuzzi), the Model Name, and then a Serial Number.  If you have any questions of how to locate the spa SN, or how to determine information of your spa by its SN, please email us.


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$89.99 USD