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Softub Hot Tub Spa Filters

Softub makes portable, soft-sided hot tubs, and a fresh filter keeps the water clean and clear. These compatible Softub filters from SpiroPure are replacement cartridges designed to fit Softub hot tubs and spas, delivering efficient filtration for less than the original brand. Check the part number on your current Softub filter, confirm fit with our cross-reference chart, and order with free shipping over $99. Need other spa tub filters? Browse our full pool and spa filter collection.

FAQs on Softub Hot Tub Spa

How often should I replace my Softub filter?

Plan on about every 3–12 months with proper use, though usage, water quality and cleaning habits matter. If your owner's manual sets a shorter schedule, follow it. Check the filter whenever you clean it, and replace it if the media is torn or flow stays weak. Larger pool filters can last longer.
Softub filter styles vary by tub model year, so start with the part number on your current filter. Search it in the AllFilters cross-reference chart to find a SpiroPure Softub-compatible match. No number? Measure the diameter and length, note how it attaches, and use the filter finder. Be aware that old filters may have compressed slightly with regular use altering the measurements slightly.
Yes. "Soft tub" is a common way to spell Softub, the portable hot tub brand, so both searches lead to the same filters. SpiroPure Softub-compatible cartridges are listed by the part numbers they replace. Confirm yours in our cross-reference chart before ordering.
Yes, if it is in good condition. Rinse between the pleats with a garden hose, soak in an approved cartridge cleaner or gentle detergent for oils or scale, and skip pressure washers. Replace the filter if the media is torn or flow stays weak after cleaning.
A filter is only one variable in water clarity. Cloudy water can also come from water chemistry, sanitizer levels, algae or circulation. Test the water, follow Softub's water-care guidance, and confirm your filter is clean, seated correctly and the right fit. If cloudiness persists, ask a spa professional.

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