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bought some strips for cheap on ebay, 128 leds per strip, no good data on the internet (made for acuity by samsung)... Here's the odd thing, there's 1 diode (US1J), 1 cap, and 2 resistors on the strip.... so I'm wondering if this an ac/dc rectifier circuit? model # is one of the following...

ordered a couple of these: https://www.aliexpress.com/item/2017-New-Arrival-COB-IC-LED-Lamp-Integrated-SMD-Chip-High-Lumen-Real-10W-20W-30W/32799082392.html Note - the 100W chip and the 70W chip are exactly the same -- no sense in ordering 100W version. I was hoping these would compare...

(said in my best Crocodile Dundee voice) Bought one of these @ $25 just because I want to know how it performs when under-driven. Claimed stats: 200W 160mm LED COB Diameter of board: 160mm Emitting diameter: 155mm Power: 200W Current: 15A Voltage: DC 12V - 14V Emitting color: Cold whie...

Finally got this together: 20 X SI-B8U114280WW @ $3.68 each 1 X HLG-185h-48A

I bought a couple of these: http://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8T342560WW/1510-1324-ND/5875178 I have a number of different generic no-name 5630 flexible 5m strips, and these latest samsung hard strips are as much as 6 times brighter. HUGE difference...

I'd like to start a discussion regarding light cycles and the use of specific light spectrum to encourage the plants to finish as fast as possible. I'm specifically referencing shortened day cycles (less than 24hr) as well as the use of 730nm light at lights out (and anything else people have...

I was recently in the market for a gun cabinet, and got a chance to look at this: http://www.walmart.com/ip/Stack-On-GCWB-10-5-DS-Sentinel-10-Gun-Security-Cabinet/14710131 It's just about perfect as a starting place for a stealth cabinet in my opinion and is only $99. Just wanted to take a...

I picked up a driver with 0-10v dimming and haven't been able to test it out yet (still building the light array). It's a philips led-inta-0350c-425-do. Should I expect minimum amperage without a 10v power source connected to the dimming leads or maximum amperage? I don't have a 0-10v dimmer...

I have two of these: http://www.satisled.com/70100w-adjustable-led-driver-ac85265v-input-dc3136v3a-output-with-dimmer_p1542.html can I use 1 dimmer (I think this is considered a pots dimmer) for both drivers?

I see a blurb on seedsman's payment page that says they aren't currently accepting.

A friend of mine picked up some 100W LED floods, and some 100W LED highbays from a going out of business sale. I don't have the details on the floods, but here's the highbay info: http://atg-led.com/docs/C_eLucent_A1.pdf it's 100W, 5500-6500K, 45degree highbay using a bridgelux chip. I'm not...

I wanted to share my unscientific observations in case it helps any DIY out there. I'm testing these two drivers: http://www.satisled.com/50w-60w-70w-adjustable-round-led-driver-ac85265v-input-dc3136v1500ma-dc12v-twoway-output_p1540.html and...

This is for cheapo 12V strip lighting that I'll be adhering to aluminum bar. I've been using Arctic Silver Alumina for my COBs, but I want something much cheaper for the cheap strip lighting. Already working on my next contraption :)

and so it begins... this cab: this light: this rpi controller: on a 3on, 9off light schedule, triggering PFR response with this: using a coffee container, my own DIY version of this (using 1/4" porous soaker hose and fittings): in a mix of coco/peat/perlite, using OC+ CRF ferts in a...

what can i say, i like building stuff. this is 50W of 1:1:1 of 5630WW:5050Red:5630CW on a thin tin disposable baking sheet. I don't know when I'll have time to test it, but I bet this could grow a stellar single cola. If anyone cares, it's about $10 of lights (which i have plenty of laying...

I wanted to share a simple system I cooked up that is working great for my moms and that I'll soon test in my other cab. I don't have a lot of time to spend gardening, so I tend to look for easy,low maintenance solutions. That's what drew me to looking into OC+ and other CRFs. Anyway, here's...

for anyone like me, who is height limited and can't really setup a gravity drain due to losing grow height, I was looking for a pump to help me out. I just picked this up and think it will do me well: http://www.amazon.com/gp/product/B001BOD9JI/ it's low volume (3.5gph) but uses an air...

I'm intrigued by them - anyone have any experience good or bad with the 7-band chips? I've found people dissing them here but they don't seem to have any personal experience with them.

I was doing research on supplemental lighting and found an older thread about UV reptile lights as supplements. Is it still considered true that UVB adds to trichome production? Who here supplements for uva/uvb?

So, i needed a decent ph meter and really wanted a 'smart'/network aware one. Turns out they exist but are expensive. Any decent ph meter seems to be fairly costly. So, I looked around to see what it would take to put one together. Here's a basic parts list: computer platform (2 choices)...