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Pool level stopping at the light?
Call now to be connected with a local pool leak specialist.
(813) 303-9621Free call connection · Open 24/7 · Plant City, Brandon, Valrico, Seffner & DoverPool light niche leak detection checks the metal or plastic housing (niche) set into the pool wall for the underwater light, the conduit that carries the light's cord to a junction box on the deck, and the seals between them. Specialists dye-test around the niche and conduit opening with the light removed or in place, and confirm whether water is leaking through the niche, the conduit, or the shell around it.
How Does a Pool Light Leak?
A traditional pool light sits in a niche, a bowl-shaped housing built into the pool wall. A conduit runs from the back of the niche through the shell and under the deck to a junction box, carrying the light's cord. The cord itself is sealed so water around it doesn't matter electrically, but the niche and conduit must be sealed into the concrete so water can't escape through them.
Over time, the bond between the niche and the plaster can crack, the niche itself can corrode (older metal niches especially), and the conduit can crack or separate under the deck. Water then leaks out through or around the niche, often until the pool level drops to the light and stops. That's the same "stops at a fitting" pattern as a skimmer leak, just lower in the wall.
Signs of a Light Niche Leak
- The pool level drops to the light and stops there
- Cracks or gaps in the plaster around the light ring
- Rust stains from an older metal niche
- Water in the deck junction box
- The light flickers or trips the breaker (have it checked by an electrician)
- Dye pulled into the gap around the light or the conduit opening
How Is It Tested?
- Dye test around the light ring and niche edge with the pump off.
- Light removal (with power off) to dye-test the conduit opening at the back of the niche.
- Conduit check: the conduit may be plugged at the niche to see if water stops.
- Listening with a hydrophone around the niche.
This is one part of a full pool leak detection, so the rest of the pool is usually checked in the same visit.
Electrical Safety First
Warning: Pool lights are electrical fixtures underwater. Never remove or open a pool light without first turning off its circuit at the breaker and confirming it's off. If a light flickers, trips the GFCI, or you feel tingling in the water, get everyone out of the pool and call a licensed electrician.
Leak specialists turn off and verify power before working on a light niche. Electrical repairs to the light, cord or junction box are handled by a qualified electrician or pool electrical contractor.
Pool Lights in Plant City
Many pools in established Plant City neighborhoods were built with metal light niches that can corrode after years in chlorinated or saltwater pools. Newer pools in communities like North Park Isle more often use plastic niches or small LED fixtures, which have different seal points. Settling decks in sandy soil can also stress the conduit under the deck.
Repair Options
Leaks around the niche are often sealed with pool-grade sealant or epoxy. A conduit leak can be sealed at the niche with a conduit plug or putty made for the purpose. A badly corroded niche may need replacing. Call (813) 303-9621 for a free quote through our 24/7 leak detection in Plant City line.
Pro tip: If you're switching to LED lights, ask about the niche and conduit seals at the same time. It's the easiest moment to reseal them.
Pool Light Niche Leak Detection FAQs
Can a pool light cause a leak?
Yes. Water can escape through gaps around the light niche, through a corroded niche, or through the conduit behind the light.
Why does my pool stop dropping at the light?
When the water falls below the light niche, a leak at the niche or conduit has nothing left to drain, so the level holds there.
Is it safe to swim with a leaking pool light?
A leaking niche isn't automatically an electrical hazard, but any flickering, breaker trips or tingling means get out and call an electrician.
Can the niche be resealed without draining the pool?
Often, yes. Many niche and conduit seals can be applied underwater with products designed for it.
How do I get a quote for pool light leak detection?
Call (813) 303-9621 and mention whether the water level stops at the light. A local specialist can give you a free quote.