Lights · Fluval
Fluval Marine 3.0 LED 46W (36-48in) fit check
Fluval Marine 3.0 LED 46W (36-48in) Lights specs, fits roughly 40-90 gallon systems, compatibility math, risks, alternatives, and vendor-neutral buying links.
Category
Lights
Build tier
Budget
Estimated price
$220
Tank fit range
fits roughly 40-90 gallon systems
Format
LED Bar
Coverage
504 sq in
Compatibility math
Coverage and PAR
fixture coverage >= tank footprint and PAR >= coral target
Example: A common 75g footprint is 864 sq in; this fixture lists about 504 sq in and 55 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.
- 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.
- Fluval Marine 3.0 LED 46W (36-48in) fits roughly 40-90 gallon systems; confirm that range against the final display volume, sump volume, and livestock plan.
Full spec snapshot
- Category
- Lights
- Build tier
- Budget
- Estimated price
- $220
- Tank fit range
- fits roughly 40-90 gallon systems
- Format
- LED Bar
- Coverage
- 504 sq in
- PAR at 18 in
- 55
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