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Questions tagged [grow-lamp]

Use this tag with questions about grow lights and grow lamps in general. About how to choose, install and maintain them. For questions about LED lights use the [led] tag.

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2 votes
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Grow lights for indoor houseplants in a low-light living room

I have several houseplants situated on shelves in my ground-floor living room. The light from the window is quite diffuse and doesn’t reach them well. Considering winter and generally bad weather, ...
kettlepot's user avatar
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2 votes
1 answer
961 views

How much artificial light should an avocado tree get?

I got 2 "young" grafted avocado trees 2-3 weeks ago. I have them indoors. From May I'd say, until September, the room gets some hours of sunlight but unfortunately when I got them it was the ...
M.K's user avatar
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1 vote
0 answers
18 views

Seeking Recommendations for a More Powerful Desk Light

I'm looking for a new grow light for my plants. The current lamp I have is too short in width, so it doesn't cover all the plants evenly. While it provides up to 20k lux at the center and based on a ...
NLed's user avatar
  • 111
4 votes
1 answer
36 views

How much power does a daylight/plant light lamp need to have?

We have a spot in our flat where there is little light. It is around 3 m (9 feet) away from the nearest window, the window goes to the east. In winter there is no direct light. We would still like to ...
Martin Ueding's user avatar
1 vote
1 answer
548 views

Grow Light - Does power line flicker affect plants?

I prefer to build my own grow lights since I can have full control over the output. The parts will be arriving late unfortunately, and the suspicious $5 50W (30W as measured) grow light (that I ...
Aloha's user avatar
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1 vote
2 answers
599 views

Would an electric light help an Aloe vera plant?

I have an Aloe vera plant in a large pot. It was doing well but when I moved homes I can't keep it as much sun light. It's getting a bit droopy and has brown parts. I'm wondering if a lamp would help ...
deploredbanked's user avatar
1 vote
0 answers
27 views

Why are my grow lights helping some plants but not others?

I have two 20 watt grow lights in my basement shining on some potted herbs and some sprouts, in soil, not hydroponic or anything like that. I grew the sprouts from seed and they seem to be thriving. ...
Joshua Frank's user avatar
2 votes
1 answer
110 views

Is "legginess" due to distance from a grow lamp a real thing?

I'm starting Common Milkweed seeds indoors under an LED panel grow lamp, and I've found this tutorial to be a useful reference, and my seeds have just started to sprout. One thing it says is: If ...
coneslayer's user avatar
2 votes
4 answers
92 views

localized grow light?

I am currently growing some tomato and chili seeds under a commercial grow light and I’ve recently bought some LEDs which I intend to use to build bigger grow lights. After some consideration of how ...
Beacon of Wierd's user avatar
1 vote
1 answer
295 views

Monkey Tail Cactus Burned under lights do I have to move it?

My Monkey Tail Cactus hangs down really low, so I have to raise it up to keep it from touching the ground. When I raise it up it gets closer to the grow light. The last time I raised it up I burned ...
user avatar
1 vote
1 answer
119 views

Locker Succulents

So my friend and I want to grow succulents in our locker. They will have no natural light but were thinking of getting them some form of battery powered grow lights and a fan to keep air circulation. ...
Bella Hodgkins's user avatar
4 votes
0 answers
116 views

Is a grow light sufficient for an indoor olive tree over the winter?

I have two small olive trees which I would like to grow indoors. Olive trees need a lot of light. Winter is coming and it will be fairly dark here, especially indoors. Will an ordinary grow light be ...
Andre Lenotre's user avatar
2 votes
0 answers
123 views

Best wavelength mix for an indoor LED grow light used to grow basil

I want to grow basil. A lot of it. Unfortunately the winter is coming, and my plants won't be able to survive outdoors. Beeing an electronics engineer, i decided to DIY an indoor growbox, so that ...
valerio_new's user avatar
1 vote
1 answer
82 views

How to make Grow Light with LED?

I made a LED setup with blue and red LED that is supposed to help me with indoor planting. I used total 4 LEDs (2 Red and 2 Blue) for one pot of Portolaca flowers. But I think it is not simulating the ...
Sohan Arafat's user avatar
2 votes
0 answers
106 views

Why are "naked" LED lamps so deadly?

Several months ago, I made the following experiment: Make a plant grow inside of a box with artifical lighting. I bought this lamp (15W): And removed the white sphere from it, so it got like: ...
Red Banana's user avatar
3 votes
2 answers
447 views

How much sunlight is required to grow a coffee plant indoors?

I’m trying to grow some coffee plants inside and I have no good place where they get all their needs so I want to start with a blank slate and control everything myself. I know coffee plants like ...
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2 votes
0 answers
87 views

Distance and spacing of LED growlights for propagation

I am planning to make an indoor propagation setup which consists of h:30cm x w:40 x L:50cm recycled polystyrene boxes and full spectrum LED panels. Clearly, the biggest limitation is height in this ...
usumdelphini's user avatar
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1 vote
0 answers
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Instead of using 54W 6500K T5's, can I use 54W 5000K T5's?

I want to buy some T5's for indoor planting. The specifications I found until now are 54W and 6500K. In a nearby shop, I found 54W with 5000K. I've been reading this and there is the following graphic:...
Red Banana's user avatar
5 votes
2 answers
589 views

What kind of grow lights do I need for a butternut squash?

I just potted a butternut squash seedling. The way my patio is situated, it doesn't always get a lot of sunlight - and I think butternut squash requires ~6 hours of it. I was going to go ahead and get ...
user avatar
2 votes
4 answers
673 views

How many grow lights do I need for starting tomato seeds?

Should I just buy a 48" shop light? I have two 10 x 20 flats. I've never done seeds indoors. I have about 6 weeks until our last frost date, May 15 in Chicago. I already started the seeds on a heat ...
Junebugapril's user avatar
5 votes
3 answers
991 views

Trying to grow Chillis with a LED Grow Lamp

I started with some chilli seeds of varying types planted in some Gro-Sure Seed & Cutting compost (https://www.gardenhealth.com/product/grosure-seed-cutting-compost). After a few weeks sitting on ...
Lee Alexander's user avatar
1 vote
1 answer
113 views

Is 60w LED enough light for 0.25m2?

I started tomato, pepper and melon plants indoors a couple of weeks ago (start February). The plants will eventually go out in a greenhouse, but probably not until May. Will 2 x 30W (2100-2400 lumens) ...
sbrattla's user avatar
  • 281
4 votes
1 answer
129 views

What is more important: lumens or PAR value?

Grow Lamp manufacturers provide several pieces of information about their product: PAR (Photosynthetic Active Radiation measured in W/m2) Photosynthetic Photon flux density (measured in µmol/s ) ...
sanjihan's user avatar
  • 1,643
3 votes
1 answer
61 views

deciphering growing lights specifics

What spectrum and strength of light are best suited for indoor tomato and pepper growing? I have around 2,5m2 of surface. The room walls will be coated with mylar. If you can be product specific, ...
sanjihan's user avatar
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6 votes
2 answers
2k views

Importance of night in hydroponics?

So I've been experimenting for the last few months with hydroponics, the general goal is to have an entirely automated system. For the most part I have this in place but I'm not too happy with the ...
Grinch91's user avatar
  • 213
1 vote
0 answers
33 views

Growing Lamps for Indoor Growing [duplicate]

Ikea has a brand of hydroponic start kits called vaxer. Part of their offering consists of lamps that aid in the cultivation of the plants (example1, example2 and example3). There are other companies ...
cantdutchthis's user avatar
3 votes
2 answers
6k views

Does moss require darkness when grown indoors?

People always say that moss prefers to grow in (moist) dark, dappled, shady, or otherwise low-light conditions. Strictly speaking, I don't believe that's the case. I think in a natural environment it ...
voices's user avatar
  • 523
0 votes
0 answers
42 views

Does moss require darkness? [duplicate]

Everybody knows that plants need light for photosynthesis, to grow and remain healthy; but do they require (or benefit from) sleep/darkness; or can they be bathed in light 24/7? I'm not talking about ...
voices's user avatar
  • 523
7 votes
1 answer
324 views

Do mulberry hardwood cuttings (breaking buds) enjoy light?

I took a hardwood mulberry cutting this winter. It's inside under a skylight and has grown some buds which (as well as already present buds) are now breaking into leaves. It might be just saved up ...
David's user avatar
  • 153
3 votes
3 answers
268 views

Will a 24W grow LED be sufficient for a 50cm x 15cm windowsill greenhouse?

I've got a few 50cm x 15cm windowsill greenhouses. As sunlight at this time of year is sparse here in northern Europe, I'd like to provide a little more light to my plants (primarily tomatoes, peppers ...
sbrattla's user avatar
  • 281
7 votes
2 answers
875 views

What should I consider while building a grow-light system?

I will build a grow light system from LED lights for a 1m x 2m square area. I am planning to grow 6 plants (vegetables) in that area. I am a little tight in terms of budget. So I want to find cheapest ...
user3160302's user avatar
2 votes
1 answer
99 views

Artificial Lighting for Growing Seedlings

I'm attempting to grow Curcubits and Nightshades (for eating) indoors (in the middle of winter). I recently acquired a (Red/Blue LED 120 watt) grow lamp - but my calculations are that it will eat a ...
davidgo's user avatar
  • 4,423