Mounting Height
Higher mounting softens peak PAR and widens spread—useful for mixed reefs. Lower mounting increases intensity for SPS zones.
Adjust in small steps and observe coral response over weeks, not hours.
Spread and Tank Coverage
Multiple smaller fixtures often cover rimless tanks more evenly than one oversized pendant with harsh falloff.
Measure corners—not just center PAR—before calling coverage good enough.
Access for Maintenance
Leave clearance to remove lids, clean glass, and reach back corners without unbolting entire assemblies.
Hinged arms help on shallow all-in-one tanks.
Cable Routing
Route cables along arms with clips so connectors do not hang in splash zones.
Service loops prevent strain when raising fixtures.
Nano Tank Clips and Brackets
Nano clips must grip rim thickness securely without cracking thin glass.
Avoid cheap generic positioning that slips when you brush the light during feeding.
Anti-Glare and Shades
Side shields and shades reduce room glare without moving corals. See our aquarium light anti-glare shade guide.
Never block ventilation paths on passively cooled fixtures.
Common mistakes
- Mounting so low that room glare becomes unbearable
- Ignoring corner PAR before adding SPS
- Cable strain on connectors after raising fixtures
- Blocking fan or vent paths with DIY shades
This guide is for general reefkeeping education. Always follow the label and safety instructions on any product you use.