If you have limited room space or just start off growing cannabis indoors, a 2x4 grow tent sounds like a preference. For compact grow tents like this, what is the best grow light to fit in? We have tested the top-tier grow lights for small grow tents and found their highlights for personal growers like you. Read on to check the best 2x4 grow light.
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What Size Light Do I Need for a 2x4 Grow Tent
The traditional recommendation for LED grow lights was around 32 watts per square foot for flowering plants. So, for a 2x4 tent, you'd want a light of at least 256 watts. However, newer LEDs are more efficient, so you might need less wattage if you're using a high-quality modern LED light. For example, a good quality 150-200 watt LED light might suffice for a 2x4 tent if it's a full-spectrum, efficient light, such as the one we are going to introduce in the following.
Spider Farmer SF2000 200W Samsung LM301H EVO LED Grow Light
PPF: 553.9 μmol/s
PPE: 2.7 µmol/J (Highest efficacy 3.14 μmol/j single diode)
Pricing: $220.99
Based on the renowned SF2000, Spider Farmer recently showcased the upgraded version of it - Spider Farmer SF2000 Samsung LM301H EVO LED Grow Light. As the name clearly points out, the newest version is equipped with advanced Samsung LM301H EVO diodes. What does it mean for a 2x4 grow tent?
- With an impressive efficacy of 3.14 µmol/J PPE per diode, the LM301H EVO diodes represent the pinnacle of effectiveness so far.
- LED grow lights with LM301H EVO diodes shine brighter and more efficiently than their well-known counterparts, better penetrating the canopy of your cannabis in the tent.
- Samsung diodes are well-known for their longevity, and the EVO ones are even more durable. With solid fracture designed by Spider Farmer, you can benefit from these LED grow lights for years.
Besides, the following advantages of Spider Farmer SF2000 Samsung LM301H EVO LED Grow Light make it the best 2x4 grow light in the market.
- The dimming knob allows for flexible adjustment of light intensity. More impressively, you can connect up to 60 lights with synchronized dimming for extensive indoor growing.
- Shaped rectangular, this grow light fits perfectly for a 2x4 grow tent and therefore ensures even light spread.
- Thanks to its low power wattage, you won’t have to worry about the grow light electricity costs.
2024 Spider Farmer UV & Infrared Red Supplemental LED Grow Light Bars Set for Plants (35.4”)
In some main light sources, a few 365 UV diodes and 730nm IR diodes may just be a marketing gimmick, and in reality, their intensity may be insufficient. Among all the supplemental light bars in our lineup, the supplementary light bars in the Supply series feature the most densely arranged diodes, specifically designed to enhance weed growth. Our 35.4-inch(90cm) UV & Infrared Red light bar set consists of 4 bars, each UV light bar equipped with a durable and sturdy metal casing and 120 diodes, while each infrared red light bar equipped with a durable and sturdy metal casing and 88 diodes.
Why use 730nm IR supplemental light bar? Stem Boost, Flower Induction, Light-induced Sleep
Why use 365nm UV supplemental light bar? Boost THC/CBD, enhance yield, improve nutrients, elevate taste/aroma, sterilize grow area (eliminating mold), aid pest control.
UV Usage Tips: Utilizing the UV grow light during the final three weeks of flowering for up to two hours per light cycle.
IR Usage Tips: 15 minutes before the main light switches on and 15 minutes after it turns off.
Length of wires at both ends of a single light bar: 73cm/28.74''Package contents: 2 x UV light bars (length: 35.4''/ 90cm) 2 x Infrared Red light bars (length: 35.4''/ 90cm) 2 x Power Cord (length: 60''/ 150cm) 8 x YoYo hangers 20 x cable ties (for securing power cords)
Spider Farmer G4500 430W Full Spectrum LED Grow Light
PPF: 1262 μmol/s
PPE: 2.8 µmol/J
Pricing: $220.99
The G series is another reputable grow light lineup from Spider Farmer. Compared with the SF2000 EVO grow light, the Spider Farmer G4500 LED Grow Light uses diode chips from Bridgelux, a local American manufacturer with 21 years of experience, whose quality is time-honored.
You may want to know: Differences Between the G Series and SE Series
What’s special about this 2x4 grow light from Spider Farmer?
- With an above-average high PAR of up to 1,378 µmols/m²/second, Spider Farmer G4500 LED Grow Light boosts the photosynthesis process and can significantly improve yield quantity and quality.
- You can see from the PPFD map, that the G4500 ensures an even distribution of light across the canopy, eliminating hotspots and ensuring all plants get uniform exposure.
- The G4500 LED grow light delivers an optimized full spectrum of light that caters to the varying needs of the plant lifecycle, including rich red light (660-665nm) that’ll do great good to yielding.
2024 Spider Farmer® G5000 480W Dimmable Cost effective Full Spectrum High Yield Commercial LED Grow Light for 4X4
Explore G5000 Complete Grow Tent Set for easy setup >>>
● Dimension: 33.86''X33.86''X3.54''
● PPF: 1364 μmol/s
● Bar-style - better air circulation, effective light penetration through plant canopies, and reduced hotspots
● Full spectrum - for growing from seed to harvest.
● High Efficiency 2.8 - with high PAR and low power consumption.
● LEDs: 1680 pcs
● Passive Cooling Detachable Driver - reduces heat and extends lifespan.
● Coverage: Veg: 4' x 4'; Flower: 3' x 3'.
● Dimmable and controllable with any universal controller 0-10V
● 5 years warranty
Mars Hydro SP3000 Samsung LM301B Osram 300W LED Grow Light
PPF: 1136 μmol/s
PPE: 2.8 µmol/J
Pricing: $269.99
Mars Hydro is also a big name in the grow light industry. By incorporating Samsung LM301B and Osram diodes, the SP3000 LED Grow Light ensures optimal performance and light output. The 300W is a medium grow light wattage to deliver high-intensity light without a hefty electricity bill.
Listed as the best 2x4 grow light, SP3000 brings the following advantages for your cannabis growing:
- With a consumption of only 300W, this light for 2x4 grow tents offers a PPE of 2.8 µmol/J which is definitely beyond expectation. Plus, the bar design aims at even and uniform PPFD across the tent.
- The daisy chain is perfect for gardeners who want to expand their grow area, allowing for up to 60 units to be connected and operated from a single power outlet.
- The full-body aluminum heatsink represents a highly efficient cooling solution. This system ensures heat generated by the LEDs is drawn upwards and away through the aluminum fins, therefore, the grow light maintains a cooler operating temperature.
You may want to know: Can LED Lights Catch on Fire?
HLG 350 330W Diablo
PPF: 950+ μmol/s
PPE: 2.8 µmol/J
Pricing: $411.75
The HLG 350 Diablo, used to be called 350R, is a premium LED grow light introduced by Horticulture Lighting Group (HLG), a renowned name in the indoor grow light industry. This 350 Diablo is initially designed for the 5x3 grow room but can also work for a 2x4 grow tent. Let’s see how it performs.
- The HLG 350 Diablo utilizes the latest in quantum board technology, covering a broad area while consuming less power compared to traditional LED setups.
- Despite its compact design, the HLG 350 Diablo offers an impressive coverage area. Be it a 2x4 grow tent or a 4x4 grow tent, HLG 350 Diablo should cover it all.
- The integrated reflectors in the lamp amplify its light output, ensuring that even the lower parts of the plant canopy receive ample light.
Unfortunately, you can see from the price that it’s not the most cost-effective option. Also, the shipping somehow takes 2-3 weeks to complete.
ViparSpectra 2023 Lens Design XS1500 Pro 150W LED Grow Light
PPF: 900+ μmol/s
PPE: 2.7 µmol/J
Pricing: $109.99
ViparSpectra manufactures a variety of LED grow lights tailored for different plant growth needs, and the 2023 XS1500 Pro is the perfect choice for your 2x4 grow tents. Why? On the forum, it’s quoted to have ‘absolutely insane uniformity for a budget light’. Here’s how it works the magic.
- The design with optical lenses ensures a more focused light with minimal loss, guaranteeing a consistent PPFD for efficient photosynthesis. This results in plants receiving even light distribution for healthier growth and increased yields.
- Ideally suited for a 3x3 ft area during the vegetative stage and 2x2 ft during flowering, you can pair two XS1500 Pro units to offer optimal illumination for a 2x4 ft growing tent.
- The dimming daisy chain capability lets you link up to 20 units, offering synchronized dimming.
ViparSpectra is so far the best option if you want uniform light coverage with a tight budget. The only downside is the limited daisy chain connection, compared with the other 2x4 grow lights mentioned above.
Conclusion
When venturing into indoor cannabis cultivation within a compact 2x4 grow tent, selecting the most suitable lighting is paramount. Our comprehensive analysis of the best 2x4 grow light reveals that the Spider Farmer SF2000 Samsung LM301H EVO LED Grow Light stands out as the best 2x4 grow light option. It combines exceptional efficacy, reliability, and value, providing an outstanding PPE and a design perfectly suited for 2x4 tents. Additionally, Spider Farmer G4500, Mars Hydro SP3000, HLG 350, and ViparSpectra XS1500 Pro are also worth considering for their prioritizing performance, efficiency, and overall value.