FAQ’s
How tall can my plants get under a 90W Illuminator? 180W Illuminator?
The 90W Illuminator can sustain a plant up to about 3 ft tall while the 180W Illuminator can support plants over 4ft tall.
How many plants can I grow with my Illuminator?
The answer is – it depends. You could grow a single small/medium sized plant with the 90W light or 9 very small plants in a SOG arrangement. The number of plants you have per light depends on the finished size of the plants you want to grow as well as the dimensions of the space you wish to cover.
There are several diodes in my light that do not light up or are very dim, is this normal?
Yes, these are infrared diodes. You won’t be able to see the light coming off of these diodes but they are working to help your plants grow.
When do I lower my lights for flowering?
First, switch to a 12 on 12 off lighting schedule. Then, drop the lights down only when you see buds forming. Dropping too soon can lead to reduced growth and yield.
What are the four switches on top of my 180W Jumbo Illuminator for?
If turned on individually, each switch will activate all the fans and 1/4 of the light. Each additional switch turned on will operate another 1/4 of the light. This is another way to control light intensity for early seedlings and clones. Alternatively, you can use the light full-on and just alter the light height above the plant to control intensity.
Can the Illuminators support a plant for both vegetative growth and flowering or do I need another light?
Yes, all of our full-cycle lights are designed to support your plants from seed/clone through flowering – no extra light needed.
These lights work so great, I want to tell others about them. Can I make some money if I tell my friends to buy your lights?
You sure can! Just join our affiliate program at LED Grow Lights Affiliate. We give you a special website address coded to you so when they make a purchase, you make money. Great for website owners!
Is your question not listed here?
Just put your question in the form below with a valid email address and we will answer it for you via email. We may even publish your question here for everyone’s benefit.
{ 29 comments… read them below or add one }
Hello
I am a student studying at the Birmingham school of Architecture, England. As a future architect who is very keen on using renewable sustainable materials for the future. I would like to know if your LED lights can replace high voltage hydroponic lights for the use of growing algae for biofuels in a commercial volume?
I believe this is the way forward and i am trying to impliment these features on a project im doing currently and also for future work.
Thanks
Peter Thomas
Hello Peter –
Our lights can be configured for growing algae, no problem. Can you tell me what kind of algae you intend to grow or do you know the absorption spectra required for this specific algae?
Thanks!
Glen
can the 180 jumbo be used to grow from cuttings, as well as flower
Matt –
They sure can – our lights are good from seed/clone to flowering. Because of the balanced spectrum in the lights, all you need to worry about is altering the light height to correspond to the stage of growth.
Thank you!
Glen
how many plants can i grow with one 180w
Alan –
The short answer is – as many as you like!
The 180W light can cover up to a 3×3 for flowering on its own. So how many plants you have just depends on how many you can or care to fit in that space. That means it could cover one larger plant or 20+ small plants – it is up to you.
Thank you for stopping by,
Glen
I am using LED’s from a very respectable up and coming new warehouse LED lighting company. I have two fixtures each one giving me very good results with little to no heat emissions. My only question is that they are white light. Theres 36 nodes that each hold a bulb with upwards of 20 LED’s- none of which are tinted specifically for a growing light spectrum. Will i see an improvement if i buy your lights because of the spectrum even though i’m pretty sure the warehouse lights emit more lumens? Also is there anyway to tint my own lights anywhere near accurately?
Adam –
When growing with LED, it is no longer about lumen output. A lumen is only a measurement of how bright a light looks to the human eye, not how well a light can grow plants. Of course white light can grow plants, however, our lights can do so more efficiently (less wasted energy) than using a full-spectrum diode. I am not aware of a way to accurately tint an LED accurately – I would be concerned with excess heat build up by introducing any substance directly to the diode.
Thank you for visiting!
Glen
hi i’m going to be starting my first grow soon but my main concern is heat. i know LED’s are way better for producing less heat but i only want to use 1 light from veg to flower from fem seed to finsih. my tent is 4wx2dx6h. I was thinking about using 1 180w jumbo for 3 or maybe 4 medical marigawana plants. I am going to be growing in soil from seed and don’t want to have to use 2 different lights to get the job done. So my question is can your 180w jumbo ufo do this for me and do it as well or better then an HID system. My tent will be in my bedroom and won’t be able to vent outside so i don’t want to be exausting excessive heat into the room where i have to sleep lol.
Hi Mike –
The 180W light can certainly grow a few plants. In this room configuration (2x4ft), you would want two of the 180w lights to fully cover it. Each 180W can cover up to 3×3 ft, so only one light would come up short on the 4 ft side. Having two of them in the 2×4 ft space will allow for some coverage area overlap which will reduce shadowing and provide for even intensity distribution which will boost your yield.
There will not be excessive heat from these lights, but you still want to be sure you have sufficient fresh air coming into your grow space. Stagnant air will reduce your yield and is a problem easily overcome with a small intake/exhaust fan.
Glen
Hi. I am interested in buying 1 180 watt illuminator. I am based in Spain. I am wondering how long will it take to be delivered on express and how many plants ( cannibis ) can I grow in a 2 meter by 2 meter room. It will well ventilated and wallsare white. Thanks for you time.
Antony –
The 180W Illuminator can cover up to 90×90 cm for flowering so it would be inadequate for a 2x2m room. Express delivery would take about 5 business days.
Thanks!
Glen
Is the Red LED aluminum indium gallium phosphide (AlInGaP) and the Blue LED indium gallium nitrate (InGaN) in the 90W UFO? And what is the IR? I just got done with my first cycle and I loved the lights! I’m researching the subject for school and have been learning more on the subject and was just really wondering what type of product I have. Thanks.
Will you be implementing an 180W model of flower accelerator anytime soon?
Hi Kiersh –
After plenty of testing and tweaking, we have found that a 180W Flower Accelerator would not offer enough of a benefit to growers over the 90W light. It comes down to the fact that plants can only take so much light before you end up over-saturating them which can cause a plant to stop growing, reducing yield.
Thank you,
Glen
I was just wondering, what lumen/watt ratios do the different colours/wavelengths have? And how many lumens would i need to grow 4 plants (from seedling to flowering maturity)?
Hi Jonathan –
Lumen output does not apply to LED grow lights because it is only a measurement of how bright a light looks to the human eye. It just so happens that plants respond most to light which does not look as bright to humans.
To sustain your plants from seed to flowering, figure on 20-40W per square foot, depending on the yield you expect to see when finished.
Thank you for stopping by –
Glen
Hy, I am planning to do some growing on 60x110cm and 120cm height with 8 plants.
Since I’m living at a rental place low energy consumption is crucial not to draw any attention.
Will two 90W lamps be enough or will I have to add a third one to have a proper yield?
Do you maybe know how big my air exchange should be since it won’t be necessary for the temperature’s sake? Thanks.
Hi Mike!
I think two of the 90W Illuminators would be a great fit for this space. You could add a third light if you wanted a more professional style yield but two of them will deliver solid results. Actual power draw for the both of them will be about 160w total.
You are right on with air exchange – it is not needed for heat’s sake but fresh air is imperative for a successful grow. I would say that a 6 inch exhaust fan would be sufficient.
Thank you!
Glen
Thanks. If adding a third light, would you consider the 90W Flower Accelerator (3′x3′) more useful than another 90W Illuminator even though the distribution might be a little uneven (missing 10cm on each side)?
Out of interest, is it possible to dim the power supply for the LEDs or do they work close to the threshold?
Again for the air exchange, so a flow of 40-60m3/h would be enough?
Thanks again.
Mike –
Going with a Flower Accelerator might be a good option but using the 90W Illuminator would provide much more even coverage. Our lights are not dimmable, however, the 180W Illuminator does have 4 power switches to control intensity. Your air flow would be plenty!
Thank you,
Glen
Sorry to bother you again, but which one do you think would give me bigger yield, the Flower Accelerator or the third 90W Illuminator?
Thanks.
Hey Mike –
I think the 3rd 90W would be the way to go!
Thanks,
Glen
I have a 5 band tri spectrum, illuminator. I just bought this from a friend and I cannot tell if it is working. I have read the comments above, could you explain a little more about why several diodesappear to be not working? Thank you sooo much!
Hi Sandy –
Each of our Illuminator grow lights contain a specific number of infrared LEDs. These diodes put off a faint glow but the rest of the diodes in the array are very bright which makes them look like they are not working. Infrared light is beyond our vision, however, plants get a big benefit from it.
Thanks!
Glen
what is the difference between your 180 w jumbo and the 180 w mother keeper? why is there a price difference?
Hi Mario –
The 180W Jumbo is designed to support you plant from seed/clone to flowering – with an emphasis on flowering abilities. The 180W Mother Keeper is specifically engineered to produce a very bushy plant with plenty of branching sites from which you can take cuttings for clones. The Mother Keeper is not a sufficient light to support flowering.
The 180W Jumbo and the Mother Keeper have different spectral profiles – the wavelengths that are emitted are different between the models. The Mother Keeper is less expensive to make and has a more limited application so it is priced accordingly.
Thanks!
Glen
I am looking to grow salads, tomatoes, herbs and sprouts in my apartment in a room without windows. I will have a double layered 3×2 ft for the salads and shorter plants and a few single pots on the side for the tomatoes and peppers. Optimally what would you suggest for my type of growing and conditions. Looking at two 90w for the shelves and one 90w or even the next step up for the couple pots on the floor.
I am just starting to look into indoor gardening and had a few other questions. How does your LED products differ from a compact fluorescent bulb? What type of light cycles should i start and finish with? and are there better lights for tomatoes vs lights for none fruiting/flowering plants like herbs and sprouts?
Thanks,
Wil
Hi, I bought a 90W illuminator from you and I read on your site that the temperature shouldn’t be lower than 80 degrees during flowering in order to get a decent yield. My problem is that during winder the temperature inside my little set up is lower than that, closer to 70 degrees.
So it’s looks like I have two options to fix this:
- Buying a heater which i think defeats the purpose of using LED because it’s going to use a lot of power.
- Run the ventilation 15 minutes on/15 minutes off which allows the temperature to rise when it’s off but my concern is that the plant wont get enough fresh air (I’m using two fans, one as an intake, one as an exhaust and the both move up to 76 m3 per hour, the set up is only 0.5 m3)
So if I work it out, this means that the air is changed 2,5 times every minutes, when I look around, some people say it should be changed 5 times every minute, some say twice per minute and others say once every five minutes.
I’m not sure what to do, what’s the deal when you using LED? How many times does the air need to be changed since we dont have to worry about the temperature being too high, but more about the temperature being too low (Hopefully I won’t have this problem when it’s not winter).