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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7
votes
2answers
775 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 ...
7
votes
1answer
239 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 ...
6
votes
2answers
1k 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 ...
5
votes
3answers
729 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 ...
5
votes
2answers
280 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 ...
4
votes
1answer
95 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 ) ...
3
votes
3answers
162 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 ...
3
votes
2answers
216 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 ...
3
votes
2answers
4k 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 ...
3
votes
1answer
57 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, ...
2
votes
4answers
86 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 ...
2
votes
4answers
369 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 ...
2
votes
1answer
86 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 ...
2
votes
1answer
76 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 ...
2
votes
0answers
47 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 ...
2
votes
0answers
70 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 ...
2
votes
0answers
90 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: ...
2
votes
0answers
48 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 ...
1
vote
1answer
101 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) ...
1
vote
1answer
37 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 ...
1
vote
1answer
107 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 ...
1
vote
1answer
33 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. ...
1
vote
2answers
57 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 ...
1
vote
0answers
22 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. ...
1
vote
0answers
16 views

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:...
1
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0answers
29 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 ...
0
votes
1answer
65 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 ...
0
votes
0answers
37 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 ...