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.
Questions tagged [grow-lamp]
32 questions
4
votes
1 answer
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 have a small plant in this corner near on the…
Martin Ueding
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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 )
Lumens
comparison to HPS lamp
I found that you need…
sanjihan
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3
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3 answers
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 and the like).
Will a 24W LED from ebay be…
sbrattla
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4 answers
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 exactly I’m going to set everything up and…
Beacon of Wierd
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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:
It burned my plant completly. After that, I bought…
Red Banana
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vote
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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. But I also have a Greek basil plant and some…
Joshua Frank
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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:
It seems that 5000K lamps have ~71% of the…
Red Banana
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Growing Lamps for Indoor Growing
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 offering lamps that should help plants grow.…
cantdutchthis
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