[fuggzy]

Thanks a bunch! I have a micro and 4x2 tent with a diy cobs, but want to make another micro cab for my males (1-2). This looks like it would work pretty well for that, or at least not break the bank at ~$5ea. I'll be going to the box store today to check them out. Take care.

[Purpzz]

What about heat? I would like to get rid of my noisy inline fan and switch it to something like 120mm pc fan and would still want to use a scrubber, but the heat produced from CFL's is too much for a PC fan with a scrubber. Could LED's make it possible to fix this issue?

Blynx, keep up the good work, you are a true inspiration source!

[HerBnGorE(illa)]

Blynx. Thanks for a great thread man! Always wondered about running leds for my situation, but the problem I noticed was all of the led grow units need to be kept a foot away from the canopy. I don't have a foot to spare considering I'm dealing with 14" of grow space. Maybe these lower watt leds will allow the plants close enough without burning?

One thing I would like to see here (if u have nothing better to do) is to make some kind of reflector for that cfl bulb (saw a cfl pop can reflector thread on icmag somewhere). See what happens with that cfl when its light is focused a bit on the "canopy"...

[blynx]

Originally Posted by Purpzz

What about heat? I would like to get rid of my noisy inline fan and switch it to something like 120mm pc fan and would still want to use a scrubber, but the heat produced from CFL's is too much for a PC fan with a scrubber. Could LED's make it possible to fix this issue?

Blynx, keep up the good work, you are a true inspiration source!

The lights do put off some heat, but it's less than a CFL. You will still need a fan to provide air circulation.

Originally Posted by HerBnGorE(illa)

Blynx. Thanks for a great thread man! Always wondered about running leds for my situation, but the problem I noticed was all of the led grow units need to be kept a foot away from the canopy. I don't have a foot to spare considering I'm dealing with 14" of grow space. Maybe these lower watt leds will allow the plants close enough without burning?

One thing I would like to see here (if u have nothing better to do) is to make some kind of reflector for that cfl bulb (saw a cfl pop can reflector thread on icmag somewhere). See what happens with that cfl when its light is focused a bit on the "canopy"...

These LED lights can be run a lot closer than 12" from the tops of the plants without any burning.

[GoeRilla]

I wonder what the scaling you measure is?
When i measure a 12W bulp at 12 inc distance i get about 1700 lux which is 1,7 Klux.
Lux means lumens/sqr meter and the readings like 7lux you measure in one of the readings is almost dark.
https://en.wikipedia.org/wiki/Lux

Rilla.

[blynx]

Originally Posted by GoeRilla

I wonder what the scaling you measure is?
When i measure a 12W bulp at 12 inc distance i get about 1700 lux which is 1,7 Klux.
Lux means lumens/sqr meter and the readings like 7lux you measure in one of the readings is almost dark.
https://en.wikipedia.org/wiki/Lux

Rilla.

Good catch. I totally forgot to explain that I was scaling the meter because of the high lux output near the bulb.

The scaling is set to 100x.

I had to use this scaling when measuring a couple inches from the bulb. Trying to measure real close to the bulb with a lower scale would cause readings of 1 (ie too high for the meter to read at that scale).

So to make all measurements consistent and relative, I used the 100x scaling for all readings.

[blynx]

Here's another 10w 2700k LED bulb I found at Wally World for like $5.

[blynx]

Here's the measurement at 12"



over 12"



measurement at 6"



measurement at 9"



front view

[blynx]

Here's what it looks like inside after the lens has been removed.

[blynx]

Here's the measurement at 12"



measurement 12" over



measurement at 6"



measurement at 9"



front view



Measurements for this LED compared to 13w CFL (lux readings at 100x scaling)

14w 2700k CFL
12" 7 lux
6" 28 lux
9" 101 lux

10w 2700k LED3 with lens
12" 13 lux
6" 71 lux
9" 508 lux

10w 2700k LED3 with no lens
12" 42 lux
6" 193 lux
9" 741 lux