10 Best 3×3 Grow Lights of 2026
Ten LED grow lights for 3x3 tents compared, from the Spider Farmer SE3000 bar light and MARS HYDRO TS1000 board to the Mars Hydro FC-3000 and AC Infinity IONFRAME EVO4.
By Ethan Cole
Updated November 2, 2026
A 3×3 tent, about three feet square, is the step up from a 2×2 that still fits in a closet or bedroom corner. Lights for it run from about 150 watts for lighter use to 300 watts for a fully planted tent of tomatoes or peppers.
This guide compares ten 3×3 lights, from compact boards to bar fixtures. For other sizes see 2×2, 2×4, 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) | Output (Listed) | Style | Control |
|---|---|---|---|---|---|
| Spider Farmer SE3000 | Best Overall | 300W | 826 µmol/s | Bars | App, schedules |
| MARS HYDRO TS1000 | Lower-Cost Board | 150W | Not listed | Board with reflector | Dimmable |
| Mars Hydro FC-3000 | Published Efficacy | 300W | 855 µmol/s, 2.85 µmol/J | Bars, assembly needed | App with controller |
| VIPARSPECTRA XS1500 Pro | Lens Optics | 150W | Not listed | Board with lenses | Dimmer, daisy chain to 20 |
| AC Infinity IONBOARD S33 | IP-65 Board | Not listed | Not listed | Board | 0 to 100% |
| AC Infinity IONFRAME EVO4 | Built-In Scheduling | 300W | 3.14 µmol/J (chip) | Bars | Schedules, 10 levels |
| FARMLITE 240W 3×3 | 0-10V Control | 240W | Not listed | Bars, IP65 | Dimmer, 0-10V, master/slave |
| AGLEX 240W | UV and IR | 240W | Not listed | Foldable | 0 to 100%, daisy chain |
| VIVOSUN AeroLight 180W | Built-In Fan | 180W | Not listed | Panel with fan | App via GrowHub |
| Spider Farmer G3000 | Digital Display | 300W | 824 µmol/s, 2.75 µmol/J | Bars | Dimmer with display |
| 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 Value |
Spider Farmer SE3000 LED Grow Light for Indoor
|
8.4/10 | $199.99 | Buy |
| Best Overall |
MARS HYDRO TS1000 150W Grow Light
|
8.7/10 | $85.49 | Buy |
Mars Hydro FC-3000 300W 3x3 LED Grow Light Full
|
8.3/10 | $199.99 | Buy | |
| Best Budget |
LED Grow Lights for Seed Starting Vegetables Bloom
|
8.6/10 | $84.98 | Buy |
| Best Premium |
AC Infinity IONBOARD S33
|
8.4/10 | $249.00 | Buy |
AC Infinity IONFRAME EVO4
|
8.3/10 | $359.00 | Buy | |
240W LED Grow Lights 3x3 Growing Bar for Indoor
|
8.3/10 | $139.99 | Buy | |
AGLEX 240W LED Grow Lights UV IR Grow Lights
|
8.3/10 | $149.99 | Buy | |
VIVOSUN AeroLight 180W LED Grow Light
|
8.4/10 | $149.99 | Buy | |
Spider Farmer G3000 LED Grow Light for Indoor
|
8.2/10 | $179.99 | Buy |
Spider Farmer SE3000 LED Grow Light for Indoor
MARS HYDRO TS1000 150W Grow Light
Mars Hydro FC-3000 300W 3x3 LED Grow Light Full
LED Grow Lights for Seed Starting Vegetables Bloom
AC Infinity IONBOARD S33
AC Infinity IONFRAME EVO4
240W LED Grow Lights 3x3 Growing Bar for Indoor
AGLEX 240W LED Grow Lights UV IR Grow Lights
VIVOSUN AeroLight 180W LED Grow Light
Spider Farmer G3000 LED Grow Light for Indoor
Top 3 3×3 Grow Lights Reviewed
#1 Spider Farmer SE3000: Best Overall
Why We Picked It
The SE3000 is a 300-watt bar fixture built for 3×3 tents. Spider Farmer lists 826 µmol/s from Bridgelux diodes with Osram hyper-red, and it scores 4.6 stars on about 360 ratings.
The Spider Farmer app sets light schedules, sunrise and sunset simulation, and brightness remotely. The bar layout is meant to reach the tent edges more evenly than a single board.
Key Specifications
- Power: 300W
- Output: 826 µmol/s (listed)
- Diodes: Bridgelux with Osram 660nm red
- Style: bars, 23.73 x 23.02 in
- App: schedules, sunrise and sunset
- Tent fit: 3×3
| Pros | Cons |
|---|---|
|
|
Things to Consider
One section of the listing describes the SE1500 spectrum; check the spec sheet in the images for the SE3000.
Best For
A fully planted 3×3 tent of peppers or tomatoes.
Skip It If
Skip it if you want the lowest cost.
Check current pricing and availability for the Spider Farmer SE3000.
#2 MARS HYDRO TS1000: Lower-Cost Board
Why We Picked It
The TS1000 is a 150-watt board with 354 LEDs and Mars Hydro’s 120-degree white reflector, which Mars Hydro says raises light use by 25 percent. It shares the TS rating of 4.6 stars on about 20,400 ratings.
Mars Hydro calls it perfect for 2.5 x 2.5 ft with a maximum of 3 x 3 ft, so it suits a 3×3 tent with lighter crops such as herbs and greens.
Key Specifications
- Power: 150W; 354 LEDs
- Coverage: 2.5×2.5 ft ideal, 3×3 ft max
- Reflector: 120-degree white
- Size: 16.0 x 12.8 in (listed)
- Weight: about 3.7 lb
- Dimming: yes
| Pros | Cons |
|---|---|
|
|
Things to Consider
For fruiting crops in a full 3×3, step up to a 300-watt light.
Best For
Herbs, greens, and seedlings in a 3×3.
Skip It If
Skip it for a tent full of tomatoes.
Check current pricing and availability for the MARS HYDRO TS1000.
#3 Mars Hydro FC-3000: Published Efficacy
Why We Picked It
The FC-3000 is a 300-watt bar light with Bridgelux 3030 diodes and Osram 660nm red, listed at 855 µmol/s and 2.85 µmol/J, the highest efficacy figure among the 3×3 lights here. It scores 4.5 stars on about 460 ratings.
It is not plug-and-play: the bars and driver need assembly. App control needs a Mars Hydro controller sold separately.
Key Specifications
- Power: 300W
- Output: 855 µmol/s, 2.85 µmol/J (listed)
- Diodes: Bridgelux 3030, Osram 660nm
- Style: detachable bars
- Coverage: 3×3 ft
- App: with separately sold controller
| Pros | Cons |
|---|---|
|
|
Things to Consider
Assembly is a one-time job; follow the manual for the driver connections.
Best For
3×3 tents where you want the most light per watt.
Skip It If
Skip it if you want plug-and-play setup.
Check current pricing and availability for the Mars Hydro FC-3000.
How to Choose a 3×3 Grow Light
150 or 300 Watts
150-watt boards suit greens and herbs; 300-watt lights suit fruiting crops across the whole tent.
Bars Reach the Edges
Bar fixtures (SE3000, FC-3000, EVO4, G3000, FARMLITE) spread light more evenly into the corners than single boards.
UV and IR
AGLEX adds 405nm UV; several lights add 730nm far-red. Do not look into them, and follow the maker’s guidance.
How We Evaluate 3×3 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 3×3 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 two entries.
Frequently Asked Questions
How many watts for a 3×3 grow tent?
About 150 watts for greens and up to 300 watts for fruiting plants across the whole tent.
Is a 3×3 tent big enough for tomatoes?
It fits one to a few compact or determinate plants; vining types need training.
Do bar lights work better in a 3×3?
They spread light more evenly to the edges, but a well-hung board also works.
Can I use a 2×4 light in a 3×3?
Several 2×4 lights list 3×3 coverage too, such as the VIPARSPECTRA P2000 and VIVOSUN LumaLight 200W.
Final Verdict
The Spider Farmer SE3000 is our 3×3 pick: high listed output, bars for even coverage, and app control. The MARS HYDRO TS1000 is the lower-cost board for herbs and greens, and the Mars Hydro FC-3000 lists the best efficacy if you do not mind assembly.
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.