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PENTAIR AQUALIGHT 77188100 HALOGEN-QUARTZ POOL & SPA LIGHT – STAINLESS STEEL HOUSING, SMALL NICHE
Model: AquaLight halogen-quartz underwater light
Part Number/SKU: 77188100
Application: Pool & Spa (small niche)
Light Type: Halogen-quartz lamp
Light Color: White
Face Ring: Stainless steel housing; plastic snap-on face rings available (Pentair AquaLight family)
Niche Type: Pentair small stainless steel niche (SpaBrite / AquaLight niche)
Compatibility: Pentair small stainless steel niche; Pentair Small Fountain Fixture 560001
The Pentair AquaLight 77188100 is a halogen-quartz underwater light from Pentair's AquaLight family, built with a stainless steel housing, a prismatic tempered glass lens and an easy-service stainless steel clamp, and installed in a Pentair small stainless steel niche (the same niche family used by the SpaBrite). Pentair's fountain-fixture manual also lists 77188100 among the Pentair luminaires approved for use with its Small Fountain Fixture 560001.
Pentair's website still carries a SKU page for 77188100 but publishes no specifications for it, and the AquaLight family page has been removed; Pentair's 2025–2026 lighting catalog lists only AquaLight replacement parts (lens 79107800 and the 250 W halogen-quartz lamp 79113800Z), not complete lights. Distributor listings describe this SKU as the 12-volt, 75-watt AquaLight with a 50-foot cord and stainless steel face ring, but because Pentair no longer publishes those figures we have not entered them as verified specifications – please confirm voltage, wattage and cord length with the supplier before ordering. A 12-volt AquaLight requires a safety isolation transformer, which is not included.
The AquaLight is a plain white halogen light with no colors, shows or automation electronics; it is switched on and off from the circuit. Pentair's plastic snap-on face rings for the AquaLight family are sold separately.
Key Features
- Pentair AquaLight halogen-quartz underwater light for pools and spas
- Stainless steel housing with prismatic tempered glass lens
- Easy-service stainless steel clamp for relamping
- Installs in Pentair small stainless steel niches (SpaBrite / AquaLight niche family)
- Listed by Pentair for use with the Small Fountain Fixture 560001
- Pentair part number confirmed; current Pentair specifications not published – confirm voltage, wattage and cord length before ordering
Specifications
| Specification | Details |
|---|---|
| Brand | Pentair |
| Part Number/SKU | 77188100 |
| Model | AquaLight halogen-quartz underwater light |
| Product Type | Halogen-Quartz Underwater Pool & Spa Light (small stainless steel niche) |
| Application | Pool & Spa (small niche) |
| Light Technology | Halogen-quartz lamp |
| Light Color | White |
| Face Ring / Finish | Stainless steel housing; plastic snap-on face rings available (Pentair AquaLight family) |
| Niche Type | Pentair small stainless steel niche (SpaBrite / AquaLight niche) |
| Niche Compatibility | Pentair small stainless steel niches per Pentair's SpaBrite & AquaLight niche installation guide (78241100–78244300 series); also listed by Pentair for use with the Pentair Small Fountain Fixture 560001 |
What's Included
- AquaLight halogen-quartz light fixture (Pentair does not publish a box-contents list)
- Not included: niche, transformer, face ring, junction box
The 77188100 is a like-for-like AquaLight replacement for an existing Pentair small-niche halogen installation; because Pentair has dropped it from its current catalog, verify the electrical specifications with the supplier and consider a current Pentair LED spa light if the niche and wiring allow.
Learn more at Pentair:
https://www.pentair.com/en-us/products/residential/pool-spa-equipment/pool-lighting/aqualight/sku/77188100.html
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