10 Best 2×4 Grow Lights of 2026
Ten LED grow lights for 2x4 tents compared, from the Spider Farmer SF2000 and long MARS HYDRO TSL2000 to the SP3000 strip and AC Infinity IONFRAME EVO3.
By Ethan Cole
Updated November 2, 2026
A 2×4 tent is long and narrow, about two by four feet. A square light hung in the middle leaves the ends dim, so the best fits are rectangular boards or long bar fixtures that match the tent’s shape, at roughly 200 to 300 watts.
This guide compares ten lights for 2×4 tents. For square tents see 3×3 and 4×4 grow lights.
Safety note: grow tent lights draw from about 65 to 850 watts. Hang them from hangers rated for the fixture’s weight, plug them into a grounded outlet (GFCI-protected in a humid tent), keep drivers and cords off wet floors, and follow the maker’s hanging height. Many of these lights include far-red or infrared (730nm) diodes and a few include UV (395 to 405nm); do not look into them at close range. We describe what each maker lists; we do not promise growth or harvest results.
All Products Compared
| Product | Best For | Power (Listed) | Shape or Size | Efficacy or PPF (Listed) | Control |
|---|---|---|---|---|---|
| Spider Farmer SF2000 | Best Overall | 200W | Board | 2.7 µmol/J system | Dimmer |
| MARS HYDRO TSL2000 | Long Board | 300W | 39.8 x 9.2 in | Not listed | Dimmer, daisy chain to 50 |
| MARS HYDRO SP3000 | Strip Fixture with App | 300W | 42.8 x 4 in | 727.2 µmol/s, 2.8 µmol/J | Dimmer box, WiFi app |
| VIPARSPECTRA XS2500 | Samsung LM301H | 250W | 23.6 x 11 in | Not listed | Dimmer, daisy chain to 20 |
| AC Infinity IONBOARD S24 | IP-65 Board | 220W | Board | Not listed | 0 to 100% |
| AC Infinity IONFRAME EVO3 | Built-In Scheduling | 280W | Bars | 3.14 µmol/J (chip) | Schedules, 10 levels |
| VIVOSUN AeroLight 240W | Built-In Fan | 240W | 26 x 13 in | Not listed | App via GrowHub |
| VIVOSUN VSX3200 | IP65 Long Fixture | 320W | 43.3 x 4.2 in | 2.8 µmol/J | 4 levels, daisy chain to 20 |
| Spider Farmer SF600 | Budget Long Light | 72W draw | 39.3 x 5.9 in | 11,000 lm | None listed |
| VIVOSUN AeroLight 320W Bars | Bars with Fan | 320W | Bars | Not listed | App via GrowHub |
| Award | Product | WikiHomeLED Score About WikiHomeLED ScoreThe WikiHomeLED Score is our own rating from 0 to 10, calculated the same way for every product from Amazon buyer ratings, adjusted for how many ratings each product has. It is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | Price | |
|---|---|---|---|---|
| Best Overall |
Spider Farmer SF2000 LED Grow Lights for Indoor
|
8.7/10 | $159.99 | Buy |
| Best Budget |
MARS HYDRO 300W TSL2000 Led Grow Lights for Indoor
|
8.7/10 | $169.99 | Buy |
| Best Value |
MARS HYDRO SP3000 Grow Light Dimmable Full
|
8.5/10 | $189.99 | Buy |
Grow Lights for Seed Starting 250W LED Grow Light
|
8.2/10 | $159.98 | Buy | |
AC Infinity IONBOARD S24
|
8.4/10 | $229.00 | Buy | |
| Best Premium |
AC Infinity IONFRAME EVO3
|
8.4/10 | $299.00 | Buy |
VIVOSUN AeroLight 240W LED Grow Light
|
8.4/10 | $189.99 | Buy | |
VIVOSUN VSX3200 LED Grow Lights
|
8.1/10 | $239.99 | Buy | |
Spider Farmer SF600 LED Grow Lights
|
8.2/10 | $65.99 | Buy | |
VIVOSUN AeroLight 320W LED Grow Light
|
8.2/10 | $294.49 | Buy |
Spider Farmer SF2000 LED Grow Lights for Indoor
MARS HYDRO 300W TSL2000 Led Grow Lights for Indoor
MARS HYDRO SP3000 Grow Light Dimmable Full
Grow Lights for Seed Starting 250W LED Grow Light
AC Infinity IONBOARD S24
AC Infinity IONFRAME EVO3
VIVOSUN AeroLight 240W LED Grow Light
VIVOSUN VSX3200 LED Grow Lights
Spider Farmer SF600 LED Grow Lights
VIVOSUN AeroLight 320W LED Grow Light
Top 3 2×4 Grow Lights Reviewed
#1 Spider Farmer SF2000: Best Overall
Why We Picked It
The SF2000 is Spider Farmer’s 2×4 board: 200 watts at a listed 2.7 µmol/J system efficacy, fanless, with 3000K and 5000K white, 660nm red, and 760nm infrared. The SF series scores 4.6 stars on about 12,400 ratings.
It carries the same 5-year warranty and US service as the rest of the series, and the title sizes it for a 2×4 tent.
Key Specifications
- Power: 200W
- Efficacy: 2.7 µmol/J system (listed)
- Spectrum: 3000K, 5000K, 660nm, 760nm
- Cooling: fanless
- Weight: 6.6 lb
- Warranty: 5 years
| Pros | Cons |
|---|---|
|
|
Things to Consider
Hang it centered and a little higher so light reaches the tent ends, or pair it with a second small light later.
Best For
A 2×4 tent of vegetables and herbs.
Skip It If
Skip it if you want a long fixture that matches the tent shape; see TSL2000 or SP3000.
Check current pricing and availability for the Spider Farmer SF2000.
#2 MARS HYDRO TSL2000: Long Board
Why We Picked It
The TSL2000 is a 300-watt TS series board stretched to 39.8 x 9.2 inches to match a 2×4 tent. Mars Hydro rates it for 4 x 2 ft for flowering plants and 3 x 5 ft in vegetative growth, and it shares the TS rating of 4.6 stars on about 20,400 ratings.
A dimmer on the external driver runs from 0 to 100 percent, and up to 50 lights daisy chain. The 120-degree white reflector design is the same as the smaller TS lights.
Key Specifications
- Power: 300W
- Size: 39.8 x 9.2 in, 7.8 lb (listed)
- Coverage: 4×2 ft flower, 3×5 ft veg
- Dimming: 0 to 100% on driver
- Daisy chain: up to 50
- Reflector: 120-degree white
| Pros | Cons |
|---|---|
|
|
Things to Consider
The external driver can hang outside the tent, which keeps some heat out.
Best For
2×4 tents where even light end to end matters.
Skip It If
Skip it if you want published efficacy.
Check current pricing and availability for the MARS HYDRO TSL2000.
#3 MARS HYDRO SP3000: Strip Fixture with App
Why We Picked It
The SP3000 is a 300-watt strip-style fixture, 42.8 x 4 x 4 inches, with a listed PPF of 727.2 µmol/s at 2.8 µmol/J. It scores 4.6 stars on about 610 ratings.
A dimming box sets brightness from 0 to 100 percent and the title lists WiFi app control and daisy chaining. The spectrum is 3000K warm white, 5000K white, and 660nm red.
Key Specifications
- Power: 300W
- Output: 727.2 µmol/s, 2.8 µmol/J (listed)
- Spectrum: 3000K, 5000K, 660nm
- Size: 42.8 x 4 x 4 in, 9.89 lb
- Control: dimming box, WiFi app (title)
- Daisy chain: yes
| Pros | Cons |
|---|---|
|
|
Things to Consider
Hang it lengthwise along the tent so the light runs the full four feet.
Best For
2×4 tents where you want app scheduling.
Skip It If
Skip it if your tent is closer to square.
Check current pricing and availability for the MARS HYDRO SP3000.
How to Choose a 2×4 Grow Light
Shape
Long fixtures (TSL2000, SP3000, VSX3200, SF600) match the tent. Square boards need to hang higher to reach the ends.
Watts
About 200 to 300 watts of real power suits a fully planted 2×4. The SF600 at 72 watts is a seedling light here.
Heat
A 300-watt light warms a 2×4 tent. Lights with external drivers let you move part of that heat outside.
How We Evaluate 2×4 Grow Lights
We did not grow plants under these lights. We compared manufacturer specifications and Amazon listing details, and ranked products by the WikiHomeLED Score, which adjusts the Amazon star rating for the number of ratings (ratings checked November 2, 2026). To qualify, a product had to be an LED grow light sold for 2×4 ft tents, with at least 20 ratings and a rating of 4.1 stars or higher. PPF, PPFD, efficacy (µmol/J), and coverage figures are as published by each seller and are not our measurements. Sellers often list a larger vegetative coverage and a smaller flowering coverage; we quote both where given. Several listings make yield claims; we do not repeat them. Mars Hydro TS, Spider Farmer SF, VIVOSUN LumaLight, VIPARSPECTRA P, and AC Infinity IONBOARD ratings are pooled across every size on one Amazon listing family, so the same rating can appear for different sizes. The full method is on our How We Review page. Brands are capped at three entries.
Frequently Asked Questions
How many watts for a 2×4 grow tent?
About 200 to 300 watts of real LED power. The lights here run from 200 to 320 watts, plus the 72-watt SF600 for seedlings.
Should a 2×4 light be long or square?
Long fixtures spread light evenly along the tent. A square board works if it hangs high enough to reach the ends.
Can I use two 2×2 lights in a 2×4 tent?
Yes, two 100-watt lights side by side is a common alternative.
Do 2×4 lights need app control?
No. Every light here dims manually; apps add scheduling and remote control.
Final Verdict
The Spider Farmer SF2000 is our 2×4 pick for its efficacy, rating base, and warranty. If you want a fixture shaped like the tent, choose the MARS HYDRO TSL2000, or the SP3000 for published output and app control. AC Infinity’s IONFRAME EVO3 is the choice for built-in scheduling.
About the author
Ethan Cole leads research and editing at WikiHomeLED, comparing LED lighting for the home through manufacturer specs, manuals, safety listings and owner feedback. Every product is scored against the criteria on our How We Review page, and picks are updated when models change.