VIVOSUN AeroLight vs Spider Farmer SF2000 2026: Which Grow Light?

Getting the light right is the single biggest decision in an indoor grow. How fast your basil fills in, whether your tomatoes fruit, how stocky your seedlings come up, it all traces back to how many photons hit the canopy. On Amazon, that choice usually comes down to two brands: VIVOSUN and Spider Farmer.

My verdict up front: for most growers the Spider Farmer SF2000 is the one to buy, more coverage, better Samsung diodes, and the output for fruiting crops, not just greens. The VIVOSUN AeroLight A100 is the smarter buy for one setup, a 2x2 tent or a shelf where a built-in fan and app scheduling beat raw coverage.

I have not run these two side by side on a PAR meter myself, so here is where my read comes from: both companies' published spec sheets, the independent light-map tests growers post, and the long-running threads on r/hydro, r/SpaceBuckets and the Spider Farmer and VIVOSUN owner groups. The picture that comes out of all of it is consistent, and it is not quite the marketing story either brand tells. These are two lights built to different briefs, and once you see that, the choice gets easy.

VIVOSUN AeroLight A100: the small-space light that thinks about airflow

The AeroLight A100 is a 100W panel designed to light a 2x2 foot space, and its headline trick is the circulation fan built into the middle of the board. Most small grow lights are a passive slab of diodes, and you are expected to add a separate clip fan for airflow. VIVOSUN put the fan in the light. It pushes air down through the canopy, which is exactly what a sealed little tent needs to fight the still, damp pockets where mold and mildew start. In a 2x2 that one design choice removes a gadget, a plug and a cable from your setup.

It runs Samsung LM301B diodes with a tunable full spectrum, so you can shift it warmer or cooler as plants move from seedling to flower, and the onboard dial dims it without any app at all. Where the smart side comes in is the GrowHub ecosystem. Pair the A100 with VIVOSUN's GrowHub controller and the app will run day and night schedules, ramp the intensity, and set the fan speed, and it does the same for every AeroLight and VIVOSUN fan you add later. That is the honest catch worth stating plainly: the app control everyone talks about needs the separate controller. Out of the box you get a very good, fan-cooled, dimmable 2x2 light, not a connected one.

In practice, what growers report lines up with the design. For seedlings, leafy greens and herbs in a small footprint it is more than enough light, and the tunable spectrum earns its keep, a cooler, bluer mix keeps young plants short and stocky instead of stretching, and you warm it up as they mature. The built-in fan quietly does the unglamorous job of keeping humidity moving so a closed 2x2 does not turn into a mildew trap. It is the kind of light you set up once and stop thinking about, which for a first tent is exactly right.

The other quiet strength is expansion. The AeroLight is built to daisy-chain. Start with one 100W panel over a 2x2, and when you outgrow it you link a second, a third, a fourth, and run the lot from one controller, building to 200W or 300W of coverage a section at a time. For someone starting deliberately small with a plan to grow, that modularity is worth real money.

Where it loses is simple: it is a 100W light for a 2x2. Ask it to cover more and it cannot, and the LM301B diodes, while genuinely good, are a step behind the newer Samsung bin in the Spider Farmer on pure efficiency. This is a light for herbs, salad, seedlings and a compact tent, and inside that box it is excellent. Outside it, you are asking the wrong light.

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Spider Farmer SF2000: the 2x4 workhorse most growers actually want

The SF2000 is the light that put Spider Farmer on the map, and the current version earns the reputation. It is a 200W board built to cover a 2x4 foot tent at flowering and a more generous 3x4 for the low-light stages, which is the footprint most serious hobby growers end up running. The current SF2000 comes with Samsung's LM301H EVO diodes, the higher-bin chip that pushes efficiency up toward the 3 micromoles-per-joule mark, so you get more usable light for every watt you pay for. Over a full canopy and years of daily runtime, that efficiency is the whole game.

It is a fanless design, which cuts both ways against the VIVOSUN. There is no built-in airflow, so you will still want a fan in the tent, but there is also no fan noise at all. The SF2000 is silent, and in a bedroom, an office, or against a wall you sleep near, that matters more than the spec sheet makes it sound. It runs a genuine dimming knob and a reliable MeanWell-class driver, and the full spectrum includes the warm and cool white plus deep red and a touch of IR that fruiting plants respond to.

Hung at the right height, the SF2000 puts down the kind of intensity fruiting crops need, not just the gentle levels that keep lettuce happy. That is the practical line between these two lights. Greens and herbs will grow under almost anything, but tomatoes, peppers and chillies need real intensity across a real area to set and ripen fruit, and this is the smaller of the two lights that can actually deliver it. Growers consistently report even coverage to the edges of a 2x4, which is exactly where cheaper panels fall down, bright in the middle and thin in the corners.

What you are really buying is coverage and headroom. A 2x4 of even, strong light is enough to flower tomatoes and peppers, not just keep herbs and lettuce ticking over. If there is any chance your ambitions grow past a salad shelf, the SF2000 is the light that comes with you rather than the one you replace.

The honest limits: it is overkill in a 2x2, where you would run it dimmed most of the time and pay for coverage you cannot use. It has no app and no smart scheduling, so if connected control is important you are looking at Spider Farmer's SE series instead, or a smart plug on a timer. And it does not daisy-chain into a modular system the way the AeroLight does. It is one strong light for one well-defined space.

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Head-to-Head

Read the table honestly and it splits down the middle. Spider Farmer wins the things that matter for growing more, coverage, diode quality and efficiency. VIVOSUN wins the things that matter for growing small and easy, built-in airflow, app scheduling and a lower power bill. Neither result is an accident. They were designed for different jobs.

Which one fits your grow

Forget the spec sheet for a second and find yourself in one of these.

Buy the Spider Farmer SF2000 if you are running, or about to run, a 2x4 tent. This is the default for anyone who wants to grow fruiting crops, keep several plants going at once, or simply not think about lighting again for a few years. It is the strong, safe choice and the one I would put most people on.

Buy the VIVOSUN AeroLight A100 if your world is a 2x2 tent, a single shelf, or a corner for herbs, salad and seedlings, and you would rather the fan and the scheduling live inside the light than clip a fan on and rig a timer. It is also the right call if you want to start small on purpose and daisy-chain your way up later, one panel at a time.

Buy the AeroLight as a second, supplemental light if you already run a big board and want to even out a dark corner, lift a propagation shelf, or add controllable airflow to part of a larger space. Its daisy-chain design and low draw make it a tidy add-on rather than a main event.

Buy neither, and look at a bigger board, if your space is already a 4x4. Both of these are the wrong size for that footprint. A single SF2000 will leave the edges thin, and the AeroLight would need four panels to fill it. At 4x4 you want a 400W-class light built for the area, and our [best grow lights guide](/guides/best-grow-lights-us) covers those.

What the wattage actually costs to run

Here is the part the spec sheets skip. The AeroLight pulls 100W and the SF2000 pulls 200W, so on a typical 16-hour schedule that is roughly 1.6 versus 3.2 kilowatt-hours a day. On your bill that is a modest gap, real but not dramatic, and it is not a reason on its own to pick one over the other. The useful way to think about it is this: run the light your space actually needs and no more. A 200W board dimmed to half in a 2x2 is paying the higher running cost for light you are throwing away, while a 100W panel run flat out over a 2x2 is doing exactly the job it was built for. Buy for the footprint, and the running cost sorts itself out.

Getting the most from either light

Whichever you pick, two things decide whether it performs: hanging height and a schedule you actually stick to. Hang too high and you bleed intensity into the walls of the tent and get stretchy, pale plants reaching for the source. Hang too low and you can bleach the tops. Both lights are dimmable, so the right move is to start higher and dimmer over seedlings, then bring the light down and the intensity up as the canopy fills in. Give leafy greens and herbs around 16 hours a day, and drop fruiting crops to roughly 12 once they flower.

A cheap mechanical timer, or the GrowHub schedule on the VIVOSUN, takes the guesswork out of the light cycle, and our grow tent setup guide walks through the rest of the build around the light. The last piece is airflow, which is where the AeroLight's built-in fan is quietly doing work the SF2000 leaves to you. If you run the fanless Spider Farmer, add a small clip fan moving air across the canopy rather than straight at it. Steady airflow builds sturdier stems and stops the still, humid pockets that invite mildew from ever settling in. Get height, schedule and airflow right and either of these lights will outgrow a more expensive one used carelessly.

What to Avoid

Do not buy the mystery "1000W" panels that flood Amazon search under a rotating cast of brand names. That wattage is the theoretical draw of the diodes, not the actual power pulled from the wall, which is usually a fraction of it. They run cheap blurple diodes with no named bin, degrade fast, and shift spectrum as they age. If a listing will not name its diodes, assume it used the cheapest available, and neither the VIVOSUN nor the Spider Farmer plays that game.

Do not size up "to be safe." Putting an SF2000 in a 2x2 does not grow better plants, it wastes power you pay for and risks bleaching the tops closest to the diodes. Match the light to the footprint and use dimming for the seedling stage, do not buy coverage you will choke down to 40 percent.

Do not buy the AeroLight expecting connected control in the box. Without the GrowHub controller it is a manually dimmed light, a good one, but not a smart one. If the app is the point, price the controller in before you decide.

And do not chase a used or grey-import Spider Farmer to save a little. The LED driver is the part that fails, the warranty is the thing that protects you, and a third-party reseller unit often carries neither.

The honest case against each

The case against the VIVOSUN: for the money, you are buying convenience and airflow, not maximum growing power. The LM301B diodes and the 2x2 ceiling mean that the day you want to flower a couple of tomato plants, this is not the light that does it. If you suspect your ambitions will outgrow a herb shelf, buying it is buying a light you will supplement or replace.

Where the Spider Farmer falls short is the mirror image: it does the growing brilliantly and nothing else. No fan, no app, no modularity. In a small or shared space you will notice the missing airflow and reach for a clip fan, and if you wanted to schedule and dim from your phone, you cannot without moving up the range. It is a tool that is very good at one job and indifferent to the rest.

What I'd Buy Today

If I were setting up an indoor grow today and had a 2x4 tent, or any intention of getting one, I would buy the Spider Farmer SF2000 without a second thought. It is more light, better light, and the one that keeps up as you get more ambitious.

Get the Spider Farmer SF2000 on Amazon →

If your space is genuinely a 2x2 or a shelf, do not let anyone talk you up. The VIVOSUN AeroLight A100 with its built-in fan and app-ready scheduling is the better light for that space, and it will barely touch your power bill. Pick the one that fits your footprint, hang it, and go grow something.

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