Mars Hydro
Mars Hydro FC-E6500
$489.99Cheaper
Best Grow Lights · head-to-head
A sourced, side-by-side comparison. Mars Hydro FC-E6500 is cheaper at $489.99. Every spec and price links to its source.
Mars Hydro
$489.99Cheaper
Gavita
$1399
The Mars Hydro FC-E6500 wins 1 of the 1 specs we compare head to head; the other wins 0. The Mars Hydro FC-E6500 is the cheaper at $489.99. The Mars Hydro FC-E6500 both leads on specs and costs less — the straightforward pick.
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✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | | |
|---|---|---|
| US price | $489.99 | $1399 |
| Brand | Mars Hydro | Gavita |
| Released | — | — |
| Actual power (W) | 730 | 645 |
| Ppf umol s | 2026 | 1700 |
| Efficacy umol j | 2.8 | 2.6 |
| Flower footprint (ft) | 4x4 | — |
| Spectrum type | white-plus-red | white-plus-red |
| Diode count | 3546 | 3336 |
| Dimmable | Yes | Yes |
| Input voltage range | 120-277 | 120-277 |
| Form factor | bar-array | bar-array |
| IP rating | IP65 | IP66 |
| Warranty years | 5 | 3 |
| Weight (kg) | 10.72 | 12.9 |
Sources — Mars Hydro FC-E6500: wholesale.mars-hydro.com (verified 2026-07-11). Gavita Pro 1700e LED: advancedhydrogardens.com (verified 2026-07-11).
Where the two actually differ on the specs we track (7 of 12). Matching specs are omitted.