TARARIUM 400GPH Cold Plunge Filter for 100–800 Gal Tubs — UV Sanitation & Oxygenation, Bottom-Suction Compact Unit

TARARIUM 400GPH Cold Plunge Filter is a compact 4-in-1 circulation, filtration, UV sanitation, and oxygenation unit designed to keep 100–800 gallon cold plunge tubs, ice baths, hot tubs, and small pools clear and safe with minimal chemical use.

Whether you run an at-home cold plunge, shared studio tub, or a small backyard pool, the TARARIUM 400GPH filter gives continuous water movement, dual-stage filtering and ultraviolet disinfection in a single green-cleaning device. Built for bottom-suction debris removal and an adjustable air valve to increase dissolved oxygen, this unit helps reduce cloudy or green water and cut down on frequent full drains.

How does this filter keep ice bath water clean without daily maintenance?

The TARARIUM filter combines circulation and dual filtration so contaminants are trapped and exposed to UV light continuously, reducing suspended solids and biological growth. Bottom-suction lifts settled mud and debris; a membrane bag captures fine particles; then the UV chamber helps control microbes.

• 400 GPH flow to maintain steady turnover for 100–800 gal tubs
• Bottom-suction design lifts settled sediment for more thorough cleaning
• Membrane bag captures fine impurities and larger debris
• UV sanitation reduces reliance on chemical treatments over time

Will this system work for my tub size and setup?

The unit is rated for cold plunge and small pool volumes between roughly 100 and 800 gallons, so it suits most home plunge tubs, ice baths, spa plunge tanks and compact backyard pools. Its compact footprint and suction-cup mounting allow vertical or horizontal placement to match plumbing or space constraints.

• Recommended capacity: 100–800 gallons
• Mounts vertically or horizontally with suction-cup base
• Simple plumbing compatibility for common tub fittings
• Portable enough for studio or home relocation

How does the adjustable air valve improve water quality?

The adjustable air valve introduces controlled air into the circulation stream, increasing dissolved oxygen levels and promoting clearer, fresher-feeling water. Higher dissolved oxygen can also improve filtration performance and reduce stale odors associated with stagnant water.

• Adjustable airflow to tune oxygenation for different tub sizes
• Helps reduce musty or stale smells over time
• Supports a more comfortable, lively bathing experience
• Works in tandem with circulation for better contaminant breakdown

How quickly will the filter clear cloudy or green water?

Performance depends on initial contamination level, tub volume and run time, but typical improvements are visible within days. The combination of mechanical capture and continuous UV exposure commonly clears cloudy or algae-tinged water in about 3–7 days when operated according to recommendations.

• Visible clarity improvements often within 3–7 days
• Consistent daily runtime speeds results
• Pre-cleaning heavy debris boosts effectiveness
• Follow manufacturer cleaning and membrane replacement intervals

Who is this for: TARARIUM’s 400GPH Cold Plunge Filter is ideal for homeowners, fitness studios, wellness centers, and small pool owners who want greener, lower-chemical water care for cold plunges, ice baths, hot tubs and compact pools. It fits users seeking easier maintenance, better water clarity, and portable, flexible mounting options without installing large plumbing systems.