Technical · 4 min read
Usually 12–24 inches below the mean low water line. Depth controls the halo.
Too shallow and the fixture breaks the surface at low tide, creating glare and growth. Too deep and the halo tightens and dims in stained water.
We set most Southwest Florida docks 12–24 inches below mean low water, adjusted for tidal range and visibility.
Last updated 2026-07-05 · Reviewed by Christopher Hamilton, owner and installer.
How much electricity do underwater lights use?
Far less than people assume — a typical dock runs for pocket change per month.
Can underwater lights stay on overnight?
They can, and they should. Marine-grade LEDs are built for continuous immersion.
Choosing fixture locations
Placement decides whether a dock looks designed or decorated.
Christopher will confirm these numbers on site and refine the plan to your dock.
AI Dock Advisor
A guided consultation that returns a full lighting recommendation.
Light Color Advisor
Compare green, blue, white and RGBW — then get matched to one.
Dock Lighting Calculator
Fixture count, spacing diagram, coverage, cost and wattage.
Installation Readiness Score
Score your dock 0–100 across electrical, permits and access.