← Fluval Evo 13.5 · All nano reef lights
Best lights for the Fluval Evo 13.5
Match the fixture's coverage footprint to your tank's display footprint — a light rated for a 12×12 in area is a poor fit over a 16×16 in tank. Then pick an intensity tier based on your corals: low for soft corals or FOWLR, medium for LPS or mixed reefs, high for SPS. Most nano light manufacturers don't publish PAR, so coverage and intensity tier are the practical sizing handles.
The Fluval Evo 13.5 is a 13.5-gallon AIO with a 22 × 11.5 in footprint and ships with an integrated 16W LED, so lighting is covered out of the box. Its rear chamber measures approximately 3.5 in wide × 2.75 in deep (community-measured, not a Fluval figure), which is a tight fit — verify skimmer and pump dimensions before buying. The stock return pump runs 132 GPH; an upgraded DC pump must clear that shallow 2.75 in chamber depth.
Ranked for an LPS / mixed-reef setup. For SPS or soft-only goals, use the sizing tool.
Fluval Marine 3.0 (22W, 15-24") —
- covers 22×9" display area
- LPS/mixed intensity meets your LPS goal
All lights compared
| Light | Coverage | Intensity | Price | Verdict |
| Fluval Marine 3.0 (22W, 15-24") Fluval | 24×12″ | Medium | — | Top pick |
| Kessil A160WE Tuna Blue Kessil | 24×24″ | Medium | $259.00 | Recommended |
| Nicrew HyperReef 50 (Gen 2) Nicrew | 24×24″ | Medium | — | Recommended |
| AI Prime 16HD Reef Aqua Illumination | 24×24″ | High | $264.99 | Recommended |
| Reef Breeders Reef Nano LED Reef Breeders | 24×24″ | High | $169.99 | Recommended |
| Fluval Marine 3.0 Nano (20W) Fluval | 9×9″ | Low | $109.99 | Too dim for goal |
| AI Blade Grow 12" Aqua Illumination | 12×12″ | Medium | $263.99 | Not ideal |
| Kessil A80 Tuna Blue Kessil | 24×24″ | Low | $139.00 | Too dim for goal |
FAQ
Why use coverage footprint and intensity tier instead of PAR?
Most nano fixture manufacturers don't publish PAR data, so PAR-based comparisons aren't possible across the market. Coverage footprint and intensity tier give you a consistent, actionable way to match a light to your tank size and coral type without needing a PAR meter.
What intensity tier do I need for a mixed LPS reef?
Choose a medium-intensity fixture for a mixed LPS or mixed reef tank. Low-intensity lights are sufficient for soft corals and FOWLR setups, while high-intensity fixtures are needed only if you plan to keep demanding SPS corals.
Can I use a light rated for a larger footprint than my tank?
Yes, but it introduces more risk than benefit on a nano. You may end up with excess intensity at the center and uneven coverage, and you'll pay for output you don't need. Matching footprint closely is the better approach.