LED Ahoy!

[canniwhatsis]

Figured I'd toss in my LED flowering pic,.... single plant SCROG under 120w LED. (no HPS) Not sure how long in as I forgot to wright down the date, but it's less than half way there! imp:

[rattlingdags]

Just make sure you get some panels with more blue in them. As you see, it definitely makes a huge difference. The plants in the middle primarily under HPS were nowhere near as frosty as the plants mostly under LED.

Thats a handy tip thanks. Could I make do by adding some 6500K fluro's? Hubby brought some home recently and I had my eye on a couple for the bloomers. Would love to get some more LED's but finances don't allow it just yet.

[khyberkitsune]

Thats a handy tip thanks. Could I make do by adding some 6500K fluro's? Hubby brought some home recently and I had my eye on a couple for the bloomers. Would love to get some more LED's but finances don't allow it just yet.

Yes you could supplement with 6500K CFL no problem!

[omnibuddy]

Yes you could supplement with 6500K CFL no problem!

I use UVB supplement specifically to add crystals to the plant. UVB is a key spectrum involved in the THC creation process. You get these at your local reptile pet store and they fit a normal light socket. Highly recommended.

[khyberkitsune]

I use UVB supplement specifically to add crystals to the plant. UVB is a key spectrum involved in the THC creation process. You get these at your local reptile pet store and they fit a normal light socket. Highly recommended.

Actually most fluorescents emit UVB - they utilize two mercury lines, in UVA and UVB range to generate light. It just depends on the glass type as to how much UVB you'll get. Also, almost nobody shows UV or IR spectrum for fluorescents, and while there's not much IR there's plenty of UV.

[319]

I have a little bit of extra cash and have been reading about the benefits of vegging under LED. What LED size would replace a 600 MH? Hopefully it will cover a 4x4 area.

Thanks for your time.

[khyberkitsune]

I have a little bit of extra cash and have been reading about the benefits of vegging under LED. What LED size would replace a 600 MH? Hopefully it will cover a 4x4 area.

Thanks for your time.

Replace a 600wMH for veg. You can do that with a 120w or higher LED panel.

[319]

Thanks will look into it. Might shoot you a PM later.

[khyberkitsune]

No PM system installed on this forum.

Feel free to contact me via AIM, Yahoo, MSN, Skype, etc. I prefer AIM, Yahoo, or Skype. MSN is a pain.

[khyberkitsune]

Haven't updated - haven't been doing much besides my food crops.

I thought I'd share some intensity information I had managed to collect before I was robbed a while back.

Awhile back I needed to figure out the umol output from HID lamps. I only managed to get data from a 1,000w HPS.

The HPS registers the edge of sunlight intensity (2,000 umol) inside of a hood at about 18" away.

150w LED hits that same edge about 9 inches away.

So, assuming everything is done properly, in theory, 300w LED *SHOULD* be equivalent to a 1000w HPS.

We likely have to wait a few more years for some of the newer tech to mature and produce even higher photon flux densities.

Just remember this - cannabis burns around 4,000 umol. Wherever that 2,000 umol range is, cut that in half - that's your maximum recomended height. For example, 150w hits 2,000 at 9 inches, 4.5 inches, it's 4,000 umol.

LEDs can and WILL burn your plants!