Spider Farmer SF4000 vs SE5000
Both of these are Spider Farmer, so this is not a brand question, it is a form-factor question. Pick the Spider Farmer SF4000 EVO if you want a single quantum-board panel that flowers a 4x4 tent on the lowest upfront spend, and pick the Spider Farmer SE5000 if you want a 6-bar fixture with Samsung diodes, app control, and more even, cooler-running coverage. Both carry a 5-year warranty.
I've run board-style and bar-style fixtures side by side in the same room, and the honest takeaway is that these two are closer in finished result than their model numbers suggest. The SF4000 is the proven workhorse panel that has anchored 4x4 flower tents for years. The SE5000 is the bar light you reach for when you want gentler heat at the canopy, smartphone dimming, and light that spreads more evenly corner to corner. Here is how they actually compare, with the current 2026 specs from each fixture.
Spider Farmer SF4000 vs SE5000: Specs at a Glance
One is a quantum board, the other is a bar fixture, and that single design choice drives almost every difference below. These are the current specifications Spider Farmer publishes for each light.
The detail most spec sheets bury: these two no longer share the same diode brand. The 2026 SF4000 EVO moved to Bridgelux high-efficiency LEDs, while the SE5000 runs 1,680 genuine Samsung LM301B chips. If Samsung diodes specifically are on your checklist, that points you toward the bar light and toward our wider range of Samsung LM301 fixtures.
Who Wins on What?
Where the SF4000 EVO Fits
The SF4000 EVO is the panel I point most 4x4 growers to first. It is a single quantum board pulling 450W, rated at 2.7 µmol/J, and it covers a 5x5 footprint in veg that tightens to a dense 4x4 in flower. The 2026 revision swapped in Bridgelux high-efficiency diodes with a higher diode count and lower per-LED load, which improves thermal stability and lifespan while holding the same output. It is fanless, so it runs at 0dB, and a simple dimmer knob with multi-light unified dimming lets you chain several panels and set them together.
This is the fixture for a grower who wants the most flower coverage for the least money and does not need a phone app. The one honest tradeoff is heat behavior. As a dense single board, the SF4000 concentrates its output and its driver runs warmer than a spread-out bar light, so it wants a little more hang height and decent airflow. If you are still deciding between a board and a bar layout in general, our breakdown of the Spider Farmer SE and G series walks through the same tradeoff with Spider Farmer's bar families.
Where the SE5000 Fits
The SE5000 is the bar-style answer for growers who want Samsung diodes and smart control in one fixture. It carries 1,680 Samsung LM301B chips across six bars, draws 480W, puts out 1,333 µmol/s of PPF, and lands at 2.75 µmol/W. The six-bar layout is the headline: spreading the diodes across the canopy gives more even PPFD corner to corner and keeps heat off any single spot, which is why bar lights tend to run cooler at the leaf than a comparable board. Bluetooth and WiFi let you dim and schedule from the Spider Farmer app, and you can network up to 30 units, which is what makes it a genuine small-commercial option.
Coverage is where buyers most often misread this light. Spider Farmer rates it for a 3x3 core that extends to a 4x4 maximum, so its sweet spot for dense flower is a touch smaller than the model number implies. Veg over a 4x4 is comfortable. The spectrum is broader than the SF4000's, adding dedicated UV and an extra blue-white channel on top of warm white, 660nm red, and IR, which gives you more to work with for flower quality and morphology. If you want to understand how to read PPFD and coverage claims like these before you buy, our guide on why PPFD matters indoors is the place to start.
Coverage and Footprint
This is the dimension that should decide most purchases. The SF4000 EVO flowers a full 4x4 and vegs a 5x5 from one panel, so if your tent is a 4x4 it fills it edge to edge without a second fixture. The SE5000 is happiest flowering a 3x3 core and stretching to a 4x4 at the maximum, with even veg coverage across a 4x4. A common piece of grower advice, echoed across forums, is to treat both Spider Farmer fixtures in this class as 3x3 to 4x4 flowering lights and not to push them over a larger canopy expecting full intensity in the corners. Match the light to the tent, then fine-tune intensity with the dimmer rather than over-spreading the coverage.
Diodes, Heat, and Light Spread
Efficiency is measured in micromoles per joule, and on paper these two are a rounding error apart, 2.7 for the SF4000 and 2.75 for the SE5000. The more meaningful split is diode brand and layout. The SE5000's 1,680 Samsung LM301B chips are the recognized benchmark for hobby and small-commercial LED, while the SF4000 EVO's Bridgelux diodes are a capable U.S.-engineered alternative that the 2026 redesign runs at lower individual load for longevity.
Layout is where I see the real-world difference. A 6-bar fixture like the SE5000 distributes both light and heat across the footprint, so the canopy runs cooler and more uniform, which growers consistently report when comparing it to the denser SF4000 board. The SF4000 concentrates more output into a single panel, which is efficient and simple but asks for a bit more hang height and airflow to keep the canopy temperature in range. Neither is wrong; a bar light trades a little simplicity for spread and cooler running, and a board trades spread for a lower price and a larger raw footprint.
Control and Scaling
If you only run one light and like keeping things simple, the SF4000's knob is genuinely all you need, and its multi-light unified dimming still lets you gang several panels to one setting. The SE5000 is built for the grower who wants more: Bluetooth and WiFi app control for dimming and scheduling, and the ability to network up to 30 fixtures for a room build. That scaling headroom, plus the Samsung diodes, is most of what you are paying the premium for. Both lights sit at the value end of our broader LED grow light lineup, so even the step up stays affordable next to commercial-tier names.
Which Model Matches Your Tent?
If your tent is not a 4x4, you may be better served by a different Spider Farmer model entirely. Use this as a starting point, then dial intensity with the dimmer. Every model below links to its exact product page.
The Verdict by Grower Type
- Budget 4x4 flower grower: Spider Farmer SF4000 EVO. The most flower coverage for the lowest spend, and the knob keeps it simple.
- Wants Samsung diodes and app control: Spider Farmer SE5000. Genuine LM301B chips, Bluetooth and WiFi dimming, cooler-running bars.
- Heat-sensitive room or short hang height: SE5000. The 6-bar spread keeps canopy temperature more even than a dense board.
- Planning to scale to several tents: SE5000 for app networking, or step into the larger SE7000 for bigger footprints.