LEDs Stripping Back the BS. Vegging 6 Clones under 22 Watts

PetFlora

PetFlora

Well-Known Member
LED Tent

This morning I replaced 2 @ 7w bulbs with 2 @ 9.5w CREE as they have more warm colors= reds

HOT5

This morning I replaced a 2900 with a Coral Wave which covers UVA/UVb, hopefully to increase tric production, which is already there, but light coating

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Chronikool

Chronikool

Well-Known Member
I know it uses Samsung 5630's....they are bright...it lookz good. Price of them?

But you know the story....Its a LED...so got to get it home 1st.... :D
 
Chronikool

Chronikool

Well-Known Member
Just posting a few more photos of the innovations and new designs of the humble household LED. Picked up these the other day.

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Would be alot easier to DIY this type of household LED huh? :)

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Nice even light coverage across the bulb.

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This Cob type bulb is rated at 12w (draws 10.2-3)
 
PetFlora

PetFlora

Well-Known Member
Pretty cool, IF you have the room inside the tent. My tent is short, so tubes will gain me ~ 8", including the fixture, hanging hooks...

Also, I like the idea of stable lumens across ~ 4ft canopy, vs point source type bulbs where it drops significantly ~ 9"+ away from center

New from CREE. I would go with several smallest COBs http://www.cree.com/led-components-and-modules/landing-pages/cxa?WT.mc_id=CRX155
 
PetFlora

PetFlora

Well-Known Member
I got a price on the 23w T8s of $34 per + shipping. Minimum order $100. I am ordering 3 @ 2800-3200K + 1 @ 5500-6500K. Each has outboard drivers

The tubes are ~ 1/2 the wattage of my HOT5s (54), but based on experience with leds, they will likely grow comparably, plus, last 5xs longer (and no mercury). Anyway, the aquarium bulbs are about the same price, so it's all good.

http://www.atgelectronics.com/tube/E58i-LED-Tube-(HO-Version).html
 
420Barista

420Barista

Well-Known Member
Well I am going to follow this and a few other current threads on LED's you peeps definitely seem to have a handle on the new tech.

Been hearing alot of talk on uv and ir leds at the right time in the grow cycle and properly spaced from the plant tops adds to the plants potency. (cant help but want to know if this is a Fact or is it just hype?

as this is my first post on RIU I just wish to say Hi all !!! and while i do have a few small personal grows from a few years back under my belt I am itching to get another started. still have the equipment and all from last grow but ran into a small prob with breakers popping on occasion from other appliances sharing the same breaker as the grow. And noticing every few months this year of the power outages in my area making me feel like im living in a third world country.

So i figure I would read into whats good in leds these days back in 2009 if i recall the procyon was an impressive unit but there was the ufo and the knockoffs. so i will be intently investigating and determining whats good out there to get these days.

so with that said this old dog is looking into a new trick.
 
PetFlora

PetFlora

Well-Known Member
420Barista said:
Well I am going to follow this and a few other current threads on LED's you peeps definitely seem to have a handle on the new tech.

Been hearing alot of talk on uv and ir leds at the right time in the grow cycle and properly spaced from the plant tops adds to the plants potency. (cant help but want to know if this is a Fact or is it just hype?

as this is my first post on RIU I just wish to say Hi all !!! and while i do have a few small personal grows from a few years back under my belt I am itching to get another started. still have the equipment and all from last grow but ran into a small prob with breakers popping on occasion from other appliances sharing the same breaker as the grow. And noticing every few months this year of the power outages in my area making me feel like im living in a third world country.

So i figure I would read into whats good in leds these days back in 2009 if i recall the procyon was an impressive unit but there was the ufo and the knockoffs. so i will be intently investigating and determining whats good out there to get these days.

so with that said this old dog is looking into a new trick.
Click to expand...
420Barista. Cool UN Welcome! I am fortunate to have some smart outside the box thinkers that contribute here. It seems we think collectively, leaving egos at the door. You should learn a lot.

Tubes are ordered from west coast. Alas, I am on the east coast, so hopefully here by this time next week. In the mean time, I have to buy tombstones and configure an el cheapo DIY frame.

All just in time for flower. Hope no one minds the move to tubes. They resemble HH globes, just long and flat

Thinking more on globes v tubes, the globes will provide a more even spectrum over a wider area, which should mean bigger yields
 
PetFlora

PetFlora

Well-Known Member
Thanks, I neglected to read them, as I do not plan to use it as designed. Reading 5 following reviews, it seems only one person had a problem. Perhaps he did not tighten things properly
 
PetFlora

PetFlora

Well-Known Member
Bulbs showed up today, 3 days sooner than I expected.

They each come with their own driver. Anybody know anything about the driver quality?

Class 2 power supply IP66

3 amp max
18-36v VDC

Output current 460 mA
Max output power 20 watts
power factor 92%
 
L

ledgrow#1

Member
im also running leds i have a four 180w panel setup second week of flower please check it out ill keep checking your posts as well.
 
PetFlora

PetFlora

Well-Known Member

The led tubes are T8, but SHOULD fit T8-T12 fixture, so I bought 2 x 2 bulb T 12s, which were $3 less each than the T 8s.

The 2 bulbs are half the price of a single 4 bulb fixture and easier to hang without help

Fixture ballast needs to be bypassed, and is prewired to the 4 tombstones

Attempting to connect the led tubes to the wired T12 fixture...

Turns out these LED tubes require one wire to each end tombstone, as opposed to both wires on one end (which would be much easier). The ones my friend got from ledwhoesalers connects on one end; the opposite end just hangs passively. Not being designed this way, means each pair of tombstones must be live, so instead of only needing to rewire 2 tombstones, all 4 must be rewired.

Turns out Fluorogrow does not make an LED friendly T8 fixture.

The tombstones that come in the Utilitech fixture from Lowes were not made to be taken apart, but I did, and broke one copper connection in the process.

Best to buy packs of tombstones instead of breaking down the existing ones. Not only is that labor intensive, it's too easy to break the tiny copper retention clasp, which I managed to do on one of them, so fixture not lighting up at the moment. I did test one side and it lit- very bright/cool.

Off to Lowes to buy tombstones.

FYI the model number of the Utilitech shop light is 420- 866 :weed::clap::-P:bigjoint::fire:
 
PetFlora

PetFlora

Well-Known Member
Let there be light

Could only connect one fixture as one section of diodes in one WW bulb is bad.

Waiting to hear what to do. He responded sending replacement ASAP

Of course I can use it, but the both bulbs need to be in place for fixture to work, and the other bulb is 4200-4700. Probably OK for flower at least as 1/4

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Welcome to the LEDs Magazine weekly newsletter for June 19, 2013.

Sometimes we shy away from covering laboratory R&D stories on LED manufacturing developments because frankly many of those developments never come to market and most take years. But we found three such recent LED R&D stories especially interesting.

Researchers at the Rensselaer Polytechnic Institute (RPI) have integrated a power transistor on the same die that also hosts an LED with state-of-the-art flux output. We could see some relatively near term cases where elements of the driver electronics are integrated on chip. Another RPI project seeks to solve the mismatch in refraction index between the semiconductor and air, thereby increasing light extraction efficiency. And a University of Washington project could yield lower-cost replacements for rare-earth elements that must be mined for LED phosphors.

We've been a big fan of LEDs used in life-science applications. That area could provide tremendous growth for the LED industry into all sorts of applications, and horticulture may be a huge opportunity. We've previously covered how LED lighting can improve plant growth in greenhouses. Now, Valoya is reporting that pollinating bees are more active under LEDs relative to legacy sources such as HPS. Purdue University also has new research on LEDs in tomato farming applications that indicates it would be cheaper and produce better fruit if we grow the fruit indoors under LED lighting in northern climates rather than importing fruit from far away.
 
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