Spider Farmer SF4000
#9 in 300 W and upFull review
A single panel that lights a 4x4 ft tent of full size vegetables. It suits growers who want one simple fixture; bar lights are more efficient.
Amazon $259.99$259.99
The Spider Farmer SF4000 is the better LED grow light overall, rated 4.3 to 3.3. The Spider Farmer SF4000 leads on warranty, value and features. The Spider Farmer SF4000 costs $299.96 less ($259.99 vs $559.95).
HLG 600 Rspec
#13 in 300 W and upFull review
A powerful, US designed panel for a 4x4 ft or larger tent. It costs far more for the same light than the bar lights here.
Amazon $559.95$559.95
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Spider Farmer SF4000 for warranty (5-year warranty vs 3-year warranty), value ($0.23 per µmol/s ($259.99, 1,141 µmol/s) vs $0.37 per µmol/s ($559.95, 1,529 µmol/s)) and features (dimmable, controller or app vs dimmable).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 300 W and up LED grow light; a clear win is highlighted. How we rank explains each one.
| Factor weight | Spider Farmer SF4000 | HLG 600 Rspec |
|---|---|---|
| Overall rating | 4.3/5 | 3.3/5 |
| Value 30% | 75 $0.23 per µmol/s ($259.99, 1,141 µmol/s) | 47 $0.37 per µmol/s ($559.95, 1,529 µmol/s) |
| Efficacy 30% | 70 2.7 µmol/J | 60 2.6 µmol/J |
| Features 15% | 70 dimmable, controller or app | 40 dimmable |
| Warranty 25% | 100 5-year warranty | 50 3-year warranty |
Specifications
| Spider Farmer SF4000 | HLG 600 Rspec | |
|---|---|---|
| Light | ||
| Power draw | 450 W | 600 W |
| PPF | 1,141 µmol/s | 1,529 µmol/s |
| Efficacy | 2.7 µmol/J | 2.6 µmol/J |
| Coverage | 4x4 ft | 6x6 ft |
| Spectrum | 660-665 nm red, 730-740 nm IR, 2800-3000K and 4800-5000K white | full spectrum white (Samsung LM301H) plus 660 nm deep red |
| Build | ||
| Form | Panel | Panel |
| Dimmable | Yes | Yes |
| Controller or app | Yes | - |
| Weight | 14.1 lb | - |
| Warranty | 5 years | 3 years |