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Probably the board is in the box backwards, open the bottom of the plastic box and take a look.

140w draw worth of Vero 4000K and 22.6w draw worth of 630nm and 660nm turned on after first 4 weeks 12/12. 2'x3' tent and canopy Day 42 12/12 Truepower OG #2 & #4 (x2), OX F2 #1 & #2 (x2), Sour Bubble BX3/4 F2 #2, Starkiller #3, clones from seed plants ran last run.

Yeah Im sure they were super hot with 90w on 44", I been running almost 1w per linear inch of 2.08 profile and its pretty warm to the touch as it is, passively cooled.

Check this shit out some guy posted in my grow thread, figured I would share it over here. So these channels he cut out allow convection to pull cooler air through the fins from the bottom of the sinks and apparently its very effective with a 20*C drop in temp on a 2.08 x 44" bars running 90w...

This. They are going to be very hungry under those LEDs. If they dont have the nutes available or the root mass they will go deficient quickly is what I have noticed in my own experience over the past year of growing with COBs.

Start feeding on the light side with Ocean Forest soil. I used Ocean Forest for medium with my NFTG sample pack and used I think I started at around 1/4 or 1/3 and worked up to1/2 strength max in peak flower based off the values in the advanced feeding chart. Also I wouldnt use any nutes at all...

Hey man just wondering what Panasonic Whisper model you got that you werent happy with. Ive been using my FV-08VKS2 80cfm in a micro setup for almost 5 years and I had to blow into a big carbon filter to help silence her down to stealth nearly silent levels. Ive been thinking about upgrading to...

Vero 4000K running @ 140w draw (driver dimmed @ 2/3 power) 8 clones in 1 gallon pots of coco, 3 Truepower OG (2 phenos), 3 OX (2 phenos), a Sour Bubble and a Starkiller on day 4 12/12.

Is that the same tent you had your 8 3070s fixture in?

Your going to want the whole surface coated with thin layer of thermal compound I wouldnt just put them centered over what is there now if it wont cover the entire thermal inferface. I would get a small tube of thermal compound of your choice its cheap enough and should be able to get it within...

I would use 2 screws with square thermal surface on back of COB fully sitting on the heatsink surface. Also I just checked my mail and the driver I was waiting for was in there haha go figure.

Well I got tired of waiting for cheap 300ma driver for single Vero 10 to test vF and realized through a stoned epiphany that I can use my HLG-60H-42B (dimmed with pot.) to test single Vero 10s. So I tested 35 of my Vero 10 4000K and all were within 24.8-25.1v at 5.3w draw on kill a watt (vF did...

Your tellin me DonP, I been waiting for my driver for driving single Vero 10s for a friggin month from fasttech, last order from them took 2 weeks... Only thing holding my new build up too pisses me off a little every day the mail comes without it.

Perfect answer thanks supra.

Hey Supra I have someone asking advice in my thread and was wondering if the Alpine 11s will handle (effectively cool) a Vero 29 at 2100mA per? Also what voltage should be ran for the fans at that current? Figured you would be the guy to ask since you might have tested Vero 29 at high(er)...

Each bar has 7 Cree XML2 U2 4C on it (14 total) on an HLG-60H-42B (dimmable) I run it at almost minimum (10%) for my moms and clones and the temp remains at ambient and bars are very cool to touch. The heatsinks are undersized for running at anything much over half current in my experience, I...

Those vegging bars were designed for use in my 11"x23.5" veg cab but I put them in my flowering tent so I had more space to finish vegging them (would have used my new fixture but its not ready yet). The bars are from heatsinkusa 2.079" profile x 23" long each. I am flowering in the 1 gallon...

I agree that is what I have been seeing as well they are damn bright/efficient though. Wish I got something a bit cooler but oh well good enough for now. 1 week ago right after transplant from 18oz red cups to 1 gallon grow bags and under XML2 4200Ks Today 1 week later Not bad though at...

Looks good man thanks for the input and pics, very nice. Mine are at about 3 weeks from seed right now.

Nice AV, Ive got a 35 (5x7) Vero 10 setup in progress for a 2x3 tent. Also 10 660nm and 4 630nm reds on separate fasttech driver.