Pool lighting | LED, RGB spotlights and floodlights

Home Accessories Pool lighting

LED lighting for swimming pools

Pool lighting replacement parts

Nichos y boquillas para iluminación de piscinas

Niches and nozzles for pool lighting

Transformadores y accesorios de iluminación para piscinas

Transformers and lighting accessories for swimming pools

Moduladores y control remoto para iluminación de piscinas

Modulators and remote controls for pool lighting

Embellecedores para iluminación de piscinas

Pool lighting trim rings

Preguntas frecuentes sobre Pool lighting

How many pool lights are needed based on the pool dimensions?

The general technical rule is to install one underwater LED light for every 20 square meters of pool water surface. For standard 8x4-meter rectangular pools (32 m²), the standard recommendation is to install two spotlights spaced along one of the long side walls.

It is essential to aim the light beam away from the house and the usual seating areas on the porch. This prevents annoying reflections and direct glare during night swimming. If the pool is more than two meters deep or the interior lining is dark or anthracite-colored, light absorption increases considerably, requiring an additional spotlight to maintain an even lumen output throughout the pool.

I have an old concrete pool without recessed niches and want to install white lighting. What can I fit without undertaking major construction work?

For pools that are already built and have no recessed opening, or where drilling into the wall is not feasible, the most effective solution is to install an ultra-flat, direct surface-mount system. In this scenario, the Weltico Nicheless white LED light - Renovation lets you mount the light using standard 1.5-inch suction or return inlets or fittings without breaking into the pool shell.

This equipment offers several key technical advantages for renovations:

Direct screw-on mounting to the wall fitting, with no need to embed a bulky niche in the wall.
Significantly lower energy consumption than older 300W incandescent bulbs.
Watertight connection compatible with standard electrical panels and 12V safety transformers.

Since you don't need to make complex structural holes in the à carrelage, you minimize the risk of causing future water leaks in the pool wall.

What safety voltage is required for an underwater light installation?

Submersible pool lights must be connected to a safety extra-low voltage, specifically 12V AC. It is strictly prohibited to power underwater spotlights directly from the 230V domestic mains, as any failure in the watertight seals would pose a serious risk to swimmers.

For reliable, protected operation, an approved 230 V to 12 V toroidal transformer must be installed in the outdoor technical panel, away from water areas. The transformer's rated wattage must also be at least 20% greater than the combined wattage of all installed lamps, preventing voltage drops that could shorten the service life of the light-emitting diodes.

I want to replace traditional halogen lights with colored LED spotlights to create different atmospheres. What technical advantages do they offer over fixed white light?

RGB lighting systems provide custom color sequences to adapt the pool's atmosphere to any occasion, while maintaining the same level of watertightness as conventional spotlights. If you're looking for decorative versatility without modifying the existing plumbing, the Nicheless color LED spotlight - Renovation features automatic color cycles and fixed shades that can be selected using pulses from the main switch or a compatible remote control.

When comparing the two technologies, consider:

White light: Provides greater clarity of the pool floor and highlights the purity of the water, with maximum lumens per watt.
Colored light (RGB): Lets you select blue, green, or red shades, or gradual color changes for social events, with slightly varying power consumption depending on the active channels.
Energy efficiency: Both LED alternatives reduce energy consumption by up to 85% compared with conventional halogen lights.

The final choice depends on whether you prioritize functional visibility for intensive swimming or nighttime aesthetic effects.

How does the color of the interior finish affect pool lighting?

The color of the à carrelage, liner, or pool paint directly affects the percentage of light reflection and refraction in the water. In pools with white, light sand, or sky-blue finishes, light easily bounces off the walls and floor, increasing overall brightness and requiring lower-wattage spotlights.

By contrast, modern finishes in dark gray, graphite, forest green, or black absorb between 40% and 60% of the lumens emitted by the lights. In dark-colored pools, it is necessary to install projectors with higher luminous flux or increase the number of light sources by 50% to achieve equivalent visibility and avoid residual shadows.

I’ve noticed that some lights flicker or turn off after a few months. What causes this failure, and how can I prevent it?

Flickering or premature failure in underwater lights is almost always caused by voltage drops due to an insufficient cable cross-section or by heat dissipation problems. Unlike surface lights, a pool LED projector is designed to cool through direct and constant contact with water; switching on the light when the pool is empty causes the electronic board to overheat immediately and drastically shortens its service life.

To avoid technical issues with your purchase and installation, check these three factors:

Use an electrical cable with a cross-section of at least 4 mm² or 6 mm² between the transformer and the light to prevent voltage drops over distances greater than 15 meters.
Ensure the IP68 watertight protection rating and check the condition of the O-rings during each regular inspection.
Check that the transformer’s output voltage remains stable at 12V under full load.

By following these technical guidelines, LED lights operate continuously for thousands of hours without any loss of brightness.

At what height on the wall should a pool light be installed?

The optimal technical position for underwater lights is between 50 and 70 centimeters below the pool’s coping or upper edge. This depth allows easy access from outside for maintenance or lamp replacement without needing to drain the pool.

Additionally, mounting the light at this height ensures that the projector remains fully submerged even during periods of natural water evaporation in the hottest months of the year. Placing it less than 40 centimeters from the edge causes surface turbulence to break up the light beam, creating irregular shadows, while depths greater than 80 centimeters make routine maintenance difficult without diving equipment.