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Actually it does give some photometrics, which are quite poor by 2018 standards: "At 210 actual watts and 320 μMol/s total photon flux" - thats barely 1.5 uMol/J

1 - Start seedlings out about 2'-2.5' feet from the light and just let them grow toward it instead of lowering it. Once they get within 12" start raising it bit by bit to maintain a constant distance. For flower you can let them get within 6"- 8". 2. Four hangers work better, with just two you...

I would dial it down a bit for seedlings - 160-200 watts total. I just started seedlings under a 2x2 sized light and they are doing quite well at 100W. I have the light raised 36" from the floor. I just let the plants grow right up to it. when they get within 12" or so then I will start raising...

It just happened to be what I had on hand at the time. A single 350W supply can be substituted for no additional charge. With two supplies you have some redundancy in case of failure.

Not really - I just didn't have one of the 350 watt supplies on hand. Cost is the same for two 150W supplies or one 350W supply.

The eight Samsung F-strip build is the same amount of diodes in two of the QB 288 boards and uses the same diode as was used in the V1 Quantum boards, Samsung's LM561C. The QB 288 V2 Quantum boards use the new Samsung LM301B diode which is a little bit more efficient - about 5% or so. The QB324...

Yeah the bulbs definitely need more wattage

Viparspectra is not an upgrade from 400W HID. Unfortunately you downgraded yourself. Return the blurple junk (if you can) and resume using the HID until you can get LEDs that actually ARE a step up; i.e. Quantum board, Samsung strips, Timber grow lights, Rapid LED, etc.

www.Cobkits.com www.timbergrowlights.com www.rapidled.com www.pacificlightconcepts.com www.bcblondes.com

You're not going to find them on Amazon.

I dunno - my plants in the 2x3 are loving the 100 watts of Sammie strips they are getting: I could turn it up to 150 but there doesn't seem to be a need for that.

Pic for today: Still no sign of pistils.

0-10v pulse width modulation.

Someone is sending me some Dank Sinatra seeds. I think I may cross them with the Black Gorilla and make "Crooning Monkey"

Yo You get better efficiency and the strips run cooler that way.

Well, I have not posted a pic for a couple days so here goes: Still no pistils visible anywhere. The one on the left already has 9 fingered leaves.

Get a fucking grip. Those are all naturally occurring trace elements, not fucking nuclear reactor products. Christ.

Yeah they aren't the greatest thing, but like a Yugo, it'll get you from A to B. Basically it will work well enough until you can get something to "help it along"

The ones that are just a circle with the plus and minus symbols are test points - but the ones with a square outline around them are not connected to anything. I just verified that with my meter on my single row 22 inchers. Having worked in circuit board manufacturing, the most likely function I...

Yeah, I see now that they are different. My Acuity strips have these, as do my F series. Can't imagine what those spots are for. Looking close I see they are just untinned copper plate circles, not connected to anything and not going through to the other side. Perhaps they are optical...