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^ you sure the blacklight has PFR? https://en.wikipedia.org/wiki/Black_light Could be wrong but I thought blacklight was only the high end of UVA.

UPDATE These are CXB3590 Got the numbers from http://www.cutter.com.au/proddetail.php?prod=cut2809 and threw them into a spreadsheet for a visual comparison Unfortunately all they had numbers for were 3000, 3500, 4000 and 5700k I dropped 700+ IR because it's more of a trigger than growth...

These are CXB3590 Got the numbers from http://www.cutter.com.au/proddetail.php?prod=cut2809 and threw them into a spreadsheet for a visual comparison Unfortunately all they had numbers for were 3000, 3500 and 4000k A simple comparison of wavelength groups by percentage. I did not bother with...

^ I was wondering the same thing

I have two 4x4 flower tents. If it's beneficial I can run different spectrums in each tent. First half of flower: 3500k or 4000k Second half of flower: 3000k w/ uvb Good idea or am I just splitting hairs? tia

Something is amiss I have bookmarks that now say I am not logged in. Yes they are lacking the www. (just checked thx 2 u) Think this started last night / this morning.

^ no worries :) Anyone used the 10.08" with it's 2.5" fin height? Wondering if when used passively the increased fin height could trap air. Same spacing as the 5.88 but much taller fins. tia

I think in this instance 1.4 amps @ 50c = 52% efficiency and 49 dissipation watts

^ thought that was for Dec '15

Greetings, Considering a 4 x CXB3590 36v @ 1.4 build. I would prefer passive cooling if it's possible. I believe GG mentioned in one of his vids the following is required for cooling: Active: 6 sq inches per heat watt Passive: 17 sq inches per heat watt 4 x 48.85 = 200 heat watts (rounded...

Is the CXB200 200 watts at the wall or 200 watts of COB's plus fans, etc.?

In Cali rates are regulated and approved by the California Public Utilities Commission. http://www.desertsun.com/story/tech/science/energy/2015/11/02/southern-california-edison-electricity-rates-change/75050098/ Getting off topic but it illustrates why some of us avoid MH and HPS

It's actually the reverse, they mandate 'green energy' production which is more expensive and the costs get passed on to us. :(

In summer I get hit with $.35 kWh here in SoCal. Compare that with my Utah friend who pays $.11 kWh Thanks Cali

I don't think the New Years deal has any restrictions, at least I hope not.

Assuming I bought 2 of your 200w models would you object if I pulled the housing, took some glamour shots and posted them here for all to see? Would it void the warranty? I would watermark them with GO GREEN LEDS like so: tia

Got it, thx.

Thx. Never ran LED but am considering it for a second 4 x 4 flower tent since full spectrum is now available via COB's. I currently run induction and those have no need for active cooling. What is the MTBF of your fans? Do LED's have some sort of thermal shut down that kicks in if a fan...

^ Caterpillar

Tempting offer, how long is it good for? I need 2, do they daisy chain together? If so is it all included? tia