slowthestone

More specifically...what is it that the plants are missing that HID and CFLs do not provide?

UVs.

UVAs are beneficial to over all MJ health.

UVBs are high octane light waves for trichrome production. Its a thing for peaking maximum production...not some sort of freakish growth.







Tip...UV blocking eye wear is a big plus around these lamps. My naked eye notices when its getting a shot of UVs.

Tip2...they're a thing a flying insect can't resist. Nor can they resist the slow cook death that takes place sans pesticides.

dangdonkey

R these expensive?
Where did you find them? I suspect pet store.
Any grow comparison? I've read a couple of gj's that claim increase in bud size from the UV. Interesting for sure.

slowthestone

Hey dang.

Not pricey at all, totally affordable. Prices mostly vary on wattage of course, and on how much UVB the lamp emits. Expect a $10-25 price.

All the world is a search engine ya know.

t_squared

They look pretty small though. Maybe use them to supplement a bigger light or use during flowering?

slowthestone

T-...

The UV bulb in in the grow to supplement the HID and or CFLs. I flip them on soon into veg...soon as I know the plants are sucking in light and nutes.

Some people vary the time they're on. I stick with, as long as its daylight, the surface of the earth is getting hit with UV. So I simply maintain emulating that and have the UV lamps on the same circuit as other lamps.

A UV light need not be bright to the eye or photo cells to be intense down in it's end of the spectrum.

dangdonkey

So true, so true.....

DangerEd

Dont all lights give off UV-A?

dontask

In what amounts, at what wavelength, at what amplitude etc etc makes all the difference!

__________________
* Anything I say is a result of complex chemical and electrical reactions occuring in my brain and should not be taken as any sort of tangible existential proof.

Freakshow68

I'm going to pick up one of these to supplement my grow.

MegaRay Flood EB

__________________
You cannot help the poor by destroying the rich.
You cannot strengthen the weak by weakening the strong.
You cannot bring about prosperity by discouraging thrift.
You cannot lift the wage earner up by pulling the wage payer down.
You cannot further the brotherhood of man by inciting class hatred.
You cannot build character and courage by taking away people's initiative
and independence.
You cannot help people permanently by doing for them, what they
could and should do for themselves. - William J. H. Boetcker

Freakshow68

What's wrong with Freakish growth?

__________________
You cannot help the poor by destroying the rich.
You cannot strengthen the weak by weakening the strong.
You cannot bring about prosperity by discouraging thrift.
You cannot lift the wage earner up by pulling the wage payer down.
You cannot further the brotherhood of man by inciting class hatred.
You cannot build character and courage by taking away people's initiative
and independence.
You cannot help people permanently by doing for them, what they
could and should do for themselves. - William J. H. Boetcker