Need chemistry help before choosing supplies? Start with our fill and balance guide and use filter cleaning instructions. Looking for pool maintenance products? Browse pool supplies.

Hot Tub Supplies

Supplies designed specifically for hot tub care, including filters, water treatment, cleaning products, and routine maintenance essentials.

Replacing a filter?

Most spa filters are matched by size, position, and cartridge style—not by spa brand. Measuring your existing filter is the best way to confirm fit.

Hot Tub Filters

Most customers match by size first, then confirm by filter type and brand.

By Size

By Function

By Brand

100 sq ft Cartridge Filter – D1 AquaFit Pro / Play / Plus (2013+)
Dimension One · Filter

100 sq ft Cartridge Filter – D1 AquaFit Pro / Play / Plus (2013+)

100 sq ft · Cartridge filter

Replaces 3000-13

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125 sq ft Cartridge Filter – Sundance
Sundance · Filter

125 sq ft Cartridge Filter – Sundance

125 sq ft · Cartridge filter

18" L × 8.5" Ø

Replaces SUN6540-490

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125 sq ft Complete Cartridge Filter – Sundance
Sundance · Filter

125 sq ft Complete Cartridge Filter – Sundance

125 sq ft · Cartridge filter

19" L × 8.5" Ø

Replaces UNI-60-5723

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30 sq ft Cartridge Filter – Hot Spring
Hot Spring · Filter

30 sq ft Cartridge Filter – Hot Spring

30 sq ft · Cartridge filter

Replaces FC-3915

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35 sq ft Cartridge Filter – FC-2385 / C-4335
Clarity Elite · Filter

35 sq ft Cartridge Filter – FC-2385 / C-4335

35 sq ft · Cartridge filter

9.25" L × 4.9375" Ø

Replaces FC-2385

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35 sq ft Circulation Pump Cartridge Filter – PAS35 / 06-0014-12
Pleatco · Filter

35 sq ft Circulation Pump Cartridge Filter – PAS35 / 06-0014-12

35 sq ft · Cartridge filter

Circulation pump

8.25" L × 4.5" Ø

Replaces PAS35

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35 sq ft Skimmer Cartridge Filter – D1 AquaFit Sport
Dimension One · Filter

35 sq ft Skimmer Cartridge Filter – D1 AquaFit Sport

35 sq ft · Cartridge filter

Skimmer

Replaces 3000-19

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36 sq ft Cartridge Filter – Bullfrog (2013+)
Bullfrog · Filter

36 sq ft Cartridge Filter – Bullfrog (2013+)

36 sq ft · Cartridge filter

8" L × 7" Ø

Replaces 10-2870

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45 sq ft Cartridge Filter – FC-2401 / 5CH-45
Clarity Elite · Filter

45 sq ft Cartridge Filter – FC-2401 / 5CH-45

45 sq ft · Cartridge filter

10" L × 5.3125" Ø

Replaces FC-2401

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50 sq ft Cartridge Filter – Bullfrog (2009–2012)
Bullfrog · Filter

50 sq ft Cartridge Filter – Bullfrog (2009–2012)

50 sq ft · Cartridge filter

9" L × 7" Ø

Replaces 10-2785

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50 sq ft Cartridge Filter – Clearwater Spas (2024+)
Clearwater Spas · Filter

50 sq ft Cartridge Filter – Clearwater Spas (2024+)

50 sq ft · Cartridge filter

Replaces 890-700-030

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50 sq ft Cartridge Filter – FC-2390 / C-4950
Clarity Elite · Filter

50 sq ft Cartridge Filter – FC-2390 / C-4950

50 sq ft · Cartridge filter

10.5" L × 5" Ø

Replaces FC-2390

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50 sq ft Cartridge Filter – Jacuzzi
Jacuzzi · Filter

50 sq ft Cartridge Filter – Jacuzzi

50 sq ft · Cartridge filter

Replaces PWW-50

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50 sq ft Cartridge Filter – Marquis
Marquis · Filter

50 sq ft Cartridge Filter – Marquis

50 sq ft · Cartridge filter

Replaces FC-0195

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50 sq ft Lower Cartridge Filter – D1 AquaFit Sport
Dimension One · Filter

50 sq ft Lower Cartridge Filter – D1 AquaFit Sport

50 sq ft · Cartridge filter

Lower

Replaces 3000-23

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50 sq ft Main Pump Cartridge Filter – PAS50SV / FC-0311
Pleatco · Filter

50 sq ft Main Pump Cartridge Filter – PAS50SV / FC-0311

50 sq ft · Cartridge filter

Main pump

13.3" L × 5" Ø

Replaces PAS50SV

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50 sq ft Upper Cartridge Filter – D1 AquaFit Sport
Dimension One · Filter

50 sq ft Upper Cartridge Filter – D1 AquaFit Sport

50 sq ft · Cartridge filter

Upper

Replaces 3000-22

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65 sq ft Cartridge Filter – Hot Spring / Tiger River
Hot Spring · Filter

65 sq ft Cartridge Filter – Hot Spring / Tiger River

65 sq ft · Cartridge filter

Replaces AK-7007

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75 sq ft Cartridge Filter – D1 (2000–Current)
Dimension One · Filter

75 sq ft Cartridge Filter – D1 (2000–Current)

75 sq ft · Cartridge filter

Replaces 01561-00-A

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80 sq ft Cartridge Filter – Sundance
Sundance · Filter

80 sq ft Cartridge Filter – Sundance

80 sq ft · Cartridge filter

14" L × 8.4375" Ø

Replaces FC-2810

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Sundance MicroClean Disposable Filter
Sundance · Filter

Sundance MicroClean Disposable Filter

Disposable filter

5" L × 8" Ø

Replaces FC-2812

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Choosing the Right Hot Tub Supplies

Selecting the right supplies for your hot tub is essential to keeping it in top condition. Whether you need replacement filters, water care chemicals, or cleaning products, compatibility is key to ensuring your system operates effectively.

Hot tub filters need to be matched by their size, type, and position to work efficiently. If you're unsure, measuring your old filter or consulting with our experts will ensure that you get the right fit for your hot tub.

In addition to filters, maintaining water quality is crucial. Our selection of chemicals and treatment products are designed to keep your hot tub water clean, balanced, and safe for use.