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OfflineRondo49
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identify what kinda light this is pls
    #26944351 - 09/19/20 03:01 PM (3 years, 4 months ago)

found a light bulb in an estate sale. not sure what kinda bulb this is? is this something i can use on my mushrooms? thanks yall!



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OfflineMolecularConcept
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Re: identify what kinda light this is pls [Re: Rondo49]
    #26947667 - 09/21/20 11:40 AM (3 years, 4 months ago)

looks like some kind of UV or blacklight LED array . you dont need anything fancy to grow mushrooms just enough light for you to see inside.


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OfflineSolipsis
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Re: identify what kinda light this is pls [Re: MolecularConcept]
    #26949760 - 09/22/20 04:59 PM (3 years, 4 months ago)

True, it would be experimental / very uncommonly done... but technically what should work for a lot of species of fungi - tho not all, is a part of the spectrum from UV-A (soft UV, blacklight) to somewhere in the green range. Blue light is in the middle of that and sometimes used.

I've tried blue light that wasnt that weak and it made me feel weird to look at it.

Blue-white light is the most practical while also being efficient imo, a mix of blue and white LED for example. But much more common is just cold daylight such as 6500K fluorescent tubes like in a lot of offices (good for productivity in humans too lol).

thats right tho - this is all technical, theoretical fancy unnecessary stuff unless maybe you have a big farm and the energy efficiency starts to matter more. But the more specific lighting you use the drawback would be when you happen to grow a species which is recalcitrant and wants red light instead.

It's perfectly fine to use common full spectrum light sources because they contain those blueish wavelengths and you normally just don't need that much (Tho i do hear there are species for which it really makes a difference to use stronger lighting.), they are not photosynthetic like plants. But then most of the light thats not blueish will tend to be waste.

Some have the same idea about plants and give them blurple, however we found out other wavelengths play more subtle roles I believe in regulating growth instead of making energy with it. Who knows if we find similar nuance about mushrooms.


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Offlinenektar61S
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Re: identify what kinda light this is pls [Re: Rondo49]
    #26960038 - 09/29/20 09:56 AM (3 years, 3 months ago)

Light should be between 5000 k and 7000 k colour temp. 6500 k is best for shrooms.

You can buy bulbs that have that colour temp, and there is an app to measure light temp. It's called "White Balance Color Temp Meter." It costs one euro.

Shine your light in otherwise dark room on white paper, point your phone at white paper, then hit "Analyze."

Light is good at all phases, from agar to the last flush of shrooms. 12 hours on and 12 hours off, in a steady cycle.

You don't need expensive fancy grow lights. You can buy ones with normal light bulb bases that work in any normal light fixture, and cost under 4 euro (5 dollars USA) each. One or two for a large tub is fine. Keep them about 40 cm (20 inches) above the sub.

That light looks UV to me, looks like a cheap black light. like the invisible end of it might be too high, above 20,000 k.

If that's the case, it may harm a grow, (and your eyes if you stare at it a lot.)

But if it's UV, it may be useful to shine on a grow to check for contams. At all stages.

Some contams glow. Mycelium doesn't, it's just dull purple-white under a black light. Grain can slightly grow green. But anything that glows a lot might be contams.

I use black light flashlight to check my grow as I pour agar mycelium into grain, and when I pour colonized grain spawn into the sub.


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