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VIVOSUN S336 3×3 Grow Tent, 36″x36″x72″ High Reflective Mylar with Observation Window and Floor Tray for Hydroponics Indoor

(10 customer reviews)


Color Black
Item Dimensions LxWxH 36 x 36 x 72 inches
Frame Material Metal
Inner Material Mylar

  • Keeps All Light Inside: The VIVOSUN Hydroponic Mylar Grow Tent is made of high-quality 600D Oxford canvas that is lined with reinforced PE layer and 100%-reflective mylar walls, which can effectively block all light from leaking and boost the output efficiency of your setup; The zipper part has also upgraded with the black inner lining to prevent light into the tent; There is no need for additional flaps or tape, you can just zip up to create a lightproof seal environment
  • Stand Sturdy & Extra-thick Materials: The indoor tent is supported with strong metal poles, top bars, and tool-free corner connectors to lock the structure securely in place; The top hanging bar can hold up to 100 lbs. each that can satisfy your different equip requirements; The premium 340 g high-density fabric is waterproof, tear-resistant and double-stitched for great light blockage, while the inside lining is designed with PE material and mylar walls that are safer for your plants
  • Easy Observation & Maintenance: With a visible window made by transparent plastic set on the grow tent, you can check the growth status of your plants at any time; The window at the bottom is helpful for heat dissipation; The hook and loop fasteners on the cover of the window are easier for you to open and observe inside; It is also equipped with a removable floor tray that is convenient to be cleaned and conserved
  • Fast & Simple Assembly: Our grow tents are easy to install even if you’ve never done anything like it before; With the guidance of the detailed instruction, you can assemble the tent in minutes; The corner connectors can uphold the tent frame stably without any tools; Come with 2 hanging straps that are able to help to fix the carbon filter as you need
  • Considerate Design & More Options: The plant grow tent offers plenty of openings for setting duct fans, lamps, electrical cords, etc.; The inner tool organizer is handy to put all your gardening tools based on your need; The tent is suitable for different places in your house, such as the domestic garage, balcony, laundry room, closet, and so on; We also provide various sizes of grow tents to meet your daily demands

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Weight 19.91 lbs
Dimensions 36 × 36 × 72 in




Frame Material


Inner Material


Outer Material

Oxford fabric, PE

Product Dimensions ‏

36"L x 36"W x 72"H

Item Weight

19.91 pounds



Item model number ‏


Manufacturer ‏


10 reviews for VIVOSUN S336 3×3 Grow Tent, 36″x36″x72″ High Reflective Mylar with Observation Window and Floor Tray for Hydroponics Indoor

  1. TWH

    I’m generally of the opinion “Buy cheap, buy twice”. However, this is my first grow tent and I didn’t want to waste a lot of money learning which features are important to me. I’ve since bought other Vivosun products and they seem to try hard to be responsive to customer needs (smart!) and provide quality products at an attractive price points.So…why buy a grow tent at all? For me, I bought an “Exhale 365” bag for CO2 augmentation, but had no way to keep the CO2 near the plants to do any good.The most important thing I learned about grow tents is that the tent itself is just the beginning. I also needed a ventilation system, carbon filter, clip fans, ratchet hangers, ducting material, screw clamps, lights, power strips w/timer feature, fan speed regulator, zip ties, and a CO2/RH/Temp meter w/logging feature.Another thing I learned is that most grow tents, are engineered to a particular configuration, but they don’t tell you what that configuration is! It may be intuitively obvious to an experienced grower, but not to a NooB like me.My “guess” is that the Vivosun grow tent is made for an inline HID lamp and filter, but that’s not what I have. I have two (2) Viparspectra 450w LEDs lamps that I thought would provide ample coverage..hung lengthwise. However, I now believe that at 24x48x60 grow tent needs at least 1200w total to provide the most desirable coverage and canopy penetration. Otherwise, your plants may stretch into the lights. I bought a third Viparspectra 450w…with the idea of hanging them widthwise, but I will need to remount the carbon filter and vent hose to the center support to hang the lights the way I want.This brings me to the fan. I bought a carbon filter, ducting, and a 4″ fan from the hydro store. I used the Vivosun supplied straps to secure the carbon filter to the upper back left frame pole. I used a screw clamp to secure the ducting to the filter, zip tied the ducting to the upper back frame pole and ran it to the fan. The fan didn’t line up with the 6″ hole to the right, so I had to use a ratchet hanger to secure the fan to the frame and lower it so it aligned with the hole. I screw clamped another piece of ducting to the output of the fan which I ran out of the hole. The 4″ fan is too strong for the 24x48x60 tent at full speed so I had to add a dimmer switch to throttle it back.That’s another thing…it would be nice if Vivosun offered a 24x48x72 tent so lights can be raised higher.Additionally, this tent is not designed for clip fans…as the fat, plastic clips have nothing to clip to. I resolved this dilemma by removing the clips and suspending the fans with ratchet hangers (actually, an effective solution). I thought it would be nice to have squeeze clamps that fit just around the poles so the fans could be secured and moved simply by squeezing the clamp and sliding the fans up or down.The tent if fairly easy to set up. However, the instructions are quite terse. You really need more room to assemble the tent than a 24x48x60 inch space. Once the frame is assembled, you have to open the tent up, attach the top of then canvas to the top of the frame, then roll the tent to its side then upside-down to “roll” the tent over the frame. Zip it up and turn it right-side up…and you’re done! The instructions don’t describe this process well. You’re pretty much on your own.This tent has many “options” designed around a HID lamp solution. However, if you’re using LEDs and using the tent to capture CO2, it doesn’t make much sense to have floor vents…as CO2 is heavier than oxygen and nitrogen and would leak out.The floor vents don’t seem to make much sense for photosensitive species that need periods of complete darkness to flower. My tent doesn’t have any stitching issues described in other reviews. I really like the high quality zippers and the overlapping flaps to keep light out. However, the stitching around the velcro of the vent flaps and the window feature can let some light in. I duct taped them all shut and have a very dark tent.That’s the next thing…the window. What a hokey feature! The plastic is hard to look through and at a level for a child or someone in a wheelchair…not someone 6’2″. My zippers meet at the upper left-hand corner. If I want to observe my plants, I unzip along the top and peer in when the lights are on. If you need to look at your plants during sleep time, and have a green light in your room, fine…but why not just unzip the top and get an unobstructed view. All the window does is let in light around the seams, so I duct taped it shut.I’m not saying the window isn’t a nice feature for some, but I shouldn’t be forced to buy the “handicapped” model if it doesn’t meet my needs. Btw, if you can’t go 12 hours without looking at your plants, perhaps you should forego the grow tent and spend your money on a psychiatrist, instead.The zippers are nice, but they don’t flow all that smoothly with the light flaps on the inside of the tent. I find that if I run my fingers inside (to push the light flaps away) as I zip, the zippers flow much more smoothly. Of course, this requires two hands to zip it up.I really like the velcro strap to hold the door out of the way when unzipped. However, it would be nice if there were a second velcro strap on the inside of the tent to hold it in place as I try to zip it back up. As I mentioned, it helps to run your hand ahead of the zipper to keep the light flap out of the way, but you can’t do that when you’re like the little Dutch boy with his finger in the dyke…holding the door up top with one hand as you zip with the other from the bottom…and the zipper getting constantly stuck on the light flap.With all that said, here’s my review…Pros:1. Easy to assemble (once you know how to assemble it).2. Sturdy and well constructed.3. Vents close up tight. The tent sucks in about 2″ all the way around from negative air pressure.4. No light pollution once vents and window are duct-tapped shut.5. The drip pan is a nice feature!Cons1. Terse instructions2. No discussion of necessary additional equipment or how the tent is designed for that additional equipment.3. Short (a 72″ model would be nice!)4. No windowless option5. No strap to hold the door in place while zipping up.

  2. Anthony Olivieri

    Tent cover exterior is a nice canvas and interior is highly reflective. Easier to put together with 2 people but this old somewhat crippled man did it himself. Frame construction is easy. Had to wrestle with the cover a little due to some space limitations and doing it alone. Come with reflective tray for the base. I have spider farmer Sf1000D light and AC Infinity 4” fan hanging in it with no issues. Only light leak is at base mesh covered vent I opened to facilitate air intake. Very nice. I recommend it.

  3. Ashley N. Perry

    This is my first tent so I don’t have much to compare to, but for what I need it to do its not that bad. The zippers do get hung up from time to time but as long as you back them off and don’t force them I can live with it. A lot of Reflection inside to bounce to light around and plenty of holes to get a ventilation system going. Can’t wait to harvest my “green beans” and “tomatoes” I think it’s going to work out well. The tray could be a little more rigid and some velcro loops sewn to hang cords and such would be nice.

  4. M

    Awesome and ez to assemble…But … I wouldn’t order it on Amazon.1) they require a passcode to accept so if you’re not home and you’re single you’re screwed. Thanks Amazon!2) Amazon is cutting costs,they delay my order delivery for Friday to accompany a smaller package on Monday, leaving me 3 days in limbo telling me every day for 3 days it’s coming and I have to be there.to sign.thats 3 days of work I missed.There are other places to shop.

  5. anthony mertson

    The manual has many different tents in it so make sure you find the right one. Once you figure it out, the set up is super easy.I needed a bit of room to actually assemble it the way the manual shows. A clean room will help set up.

  6. Trevor

    I use Vivosun products for all of my garden needs and this is another great addition to my collection. This tent is exactly what I wanted it to be. The 4’x4’ fits my plants comfortably and fits great in my home office! It was quick and easy to assemble. I’d highly recommend getting a Vivosun Grow Tent.

  7. Greg V

    I can not say enough, get this!!!!! I had a leak and no water escaped NONE! This is awesome at light reflection and taking each light and maximizing it. My plants are exploding so worth it

  8. Nick

    Really nice setup, pretty self explanatory setup. Zipper seems to catch in different spots each time.. I find holding the door in its closed place while unzipping works best but not every time. Its heavy duty but I just don’t think the zipper will work long term but I hope I am wrong!

  9. Alexander

    Doesn’t match description, missing ducts!
    The tent I received isn’t like the one as advertised in the thumbnail: mine is missing the two ducts on the lower half of the tent. At first I was livid because I didn’t know how I was going to vent the tent, and thought I was going to have to disassemble and return it because of this. However upon further inspection the tent has flaps on the lower half that have a mesh screen to pull air in through.

  10. Josh

    These tents are phenomenal!
    These tents are phenomenal. Vivosun really hit the nail on the head!These tents are easy to maintain. You simply assemble the structure and outside material fits down over and zippers up.They’re extremely user friendly. They have exhaust holes all over the place which makes it perfect for any corner of your grow room in terms of exhaust fans, cables, & plug ins etc.They’re sturdy and strong. You can easily hang your vivosun carbon filters inside these tents or even out it up too! The structure will support it with ease.The vent holes that are on the tent make it easy to help prevent negative pressure if you don’t have the proper exhaust set up, which happens sometimes.There is also a window on the front of the tent which makes it very convenient for peeking in when you’re on the run to work or just in a rush.The one and only thing I’ve noticed, which is a super easy fix for vivosun. The zippers get caught up in the material on the inside a little bit. I’ve only noticed this happen when they’re fresh out of the box, I have two and it happened both times. Once they loosen up a little bit they’re a little easier to zip/unzip. This is extremely minor and not a worry at all.Over all I’d give this tent 10/10 easy. Like I said, I have two of these. I’d buy more if I needed them and had the space. Fantastic tents for any indoor grower!

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