Red Sea ReefLED 50 fit check
Red Sea ReefLED 50 is a 50W reef light listing about 20x20 in of coverage and roughly 110 PAR at 18 inches. That clears ReefCrafter's PAR targets for soft coral and LPS tanks, but not mixed reef and SPS. Tanks wider or longer than 20x20 in need a second fixture or a mounting plan that spreads light.
Red Sea ReefLED 50: fits roughly 10-35 gallon systems. Specs, compatibility math, sizing risks, and alternatives before you buy.
Who it is for
Good fit for
- ✓ 10-35 gallon systems, per the catalog fit range.
- ✓ Soft coral (50-150 PAR) and LPS (100-200 PAR) goals at about 18 in depth.
Not a fit for
- ✕ Tanks under about 10 gallons; it is sized above them.
- ✕ Systems over about 35 gallons without adding capacity elsewhere.
- ✕ Mixed reef (150-250 PAR) and SPS (250-350 PAR) goals from a single fixture.
- ✕ Footprints larger than about 20x20 in from one unit.
Compatibility math
Coverage and PAR
Example: A common 75g footprint is 864 sq in; this fixture lists about 400 sq in and 110 PAR at 18 in.
ReefCrafter checks spread and intensity separately because a bright hotspot still leaves dim edges.
Risk notes
- The common mistake is buying a light that grows soft corals now but cannot support the mixed or SPS reef the keeper already wants.
- Price is marked as estimated, so verify current vendor pricing before treating the budget as final.
- Large or SPS-heavy tanks may need multiple fixtures even when one light technically fits the gallons.
Professional fit context
- Match coverage width, coverage length, PAR at depth, mounting plan, and fixture count.
- Red Sea ReefLED 50 fits roughly 10-35 gallon systems; confirm that range against the final display volume, sump volume, and livestock plan.
- Treat the displayed price as a budget placeholder until a reviewed vendor page confirms current pricing.
Alternatives to compare
- Kessil A160WE Tuna Blue LED
120 PAR at 18 in vs 110: more intensity for higher-light corals.
- AquaIllumination Blade Coral Grow 30in
90 PAR at 18 in vs 110: less intensity, suited to lower-light corals.
- AquaIllumination Prime 16HD Reef LED Black
150 PAR at 18 in vs 110: more intensity for higher-light corals.
Livestock this affects
- Frogspawn coral
Moderate light need; within this fixture's listed PAR.
- Goniopora (flowerpot coral)
Moderate light need; within this fixture's listed PAR.
- Green star polyps
Moderate light need; within this fixture's listed PAR.
- Pocillopora coral
High light need; wants more PAR than this fixture lists.
Full spec snapshot
- Category
- Lights
- Build tier
- Balanced
- Estimated price
- $299 est.
- Tank fit range
- fits roughly 10-35 gallon systems
- Format
- Puck LED
- Coverage
- 400 sq in
- PAR at 18 in
- 110
Related reading
Questions
Can the Red Sea ReefLED 50 grow SPS corals?
Not from one fixture at 18 inches. It lists about 110 PAR, below ReefCrafter's SPS target of 250-350 PAR. It meets the soft coral and LPS targets.
How large a tank does one Red Sea ReefLED 50 cover?
The listing gives about 20x20 inches of coverage. A tank footprint larger than that needs another fixture or a raised, spread mounting plan to avoid dim edges.
What tank size is the Red Sea ReefLED 50 for?
ReefCrafter's catalog fit range for it is 10-35 gallon systems. Confirm that against your final display volume, sump volume, and livestock plan rather than the box label alone.
What should I compare the Red Sea ReefLED 50 against?
Kessil A160WE Tuna Blue LED (120 PAR at 18 in vs 110: more intensity for higher-light corals); AquaIllumination Blade Coral Grow 30in (90 PAR at 18 in vs 110: less intensity, suited to lower-light corals); AquaIllumination Prime 16HD Reef LED Black (150 PAR at 18 in vs 110: more intensity for higher-light corals).
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