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Id stop shooting for numbers and start looking for signs of happy and healthy plant; no matter what other growers can manage in veg you need to see how much you can push yours; even if youre on someone elses numbers if your plant cant take it then it cant take it. Youve also not given any kind...

Op: This is what you need for 2 driver dimming, one driver use 100k ohm. You need to attach both dim+ to the middle tap/hole and dim - to either of the other holes; the side controls which way dims brighter/lower on the dimmer. Since they are usually cheap its a good idea to pick up a few...

For what to buy advice it usually good to know which market youre in, US/EU/UK or similar; you wanna get a light that has easy shipping and under warranty service, somewhere close to you. The alternative is to be your own warranty: DIY your light, if you can build.it you can repair it. Just...

You may wanna be careful describing these as qb288: they may have the same amount of diodes but these boards dont look like they have the same diode string as the old hlg qb288. The hlg is 16x 18 diodes in series, this one looks like its 18x 16diodes in series, 2 being reds. But i believe you...

Why not CMH instead of HPS? For us it yielded better watt per watt, its also a lot less prone to heatburn plants.

If you want to add ir your best bet is adding some incandescent light bulbs to your grow, its got plenty of IR and even reds in 680-700nm which are hard to get with leds; altogether its a much easier application. And youd get it on a separate channel so you can turn it on or off at your own will...

They say IR but its allways far red 730 when you look it up. To my knowledge the only time ive seen real IR 850nm incorporated was in a Growmau5 build from a few years ago.

Pretty sure Li-cor refers to the ppfd meter, not the light source. Edit: Sorry take that back, seems like its some kinda lighting system. Though li-cor also do ppfd meters afaik

Led plants do fine on 80-84F, its actually the recommended temps for high intensity. Missing infra red heat from HID makes the plants a bit colder. Read up on vpd if you havent allready. :)

If light across your cannopy remain the same then yield should remain the same. Thing is that youre probably not getting the exact same reading across your cannopy thru those 450w, you may get spot measurements the same but likely not the same in the entire cannopy.

Does the flicker happen on all 4 boards, on one board or on 2 boards at the same time? The AB-type driver you got : its a drver that was marketed as having the best of A type and B type in the same driver. But apparently it seems like they have ditched the voltage regulation knob that would...

This has gone so far that when i honestly say about a pound i cant help but feeling silly but thats what i think: bout a pound

These eb slims are quite flimsy, i recommend some kind of support but no sinking necessary at 700mA. The drawback with these are that the build can get messy since each strip needs a parallel string with connecting cables. Pro tip: wire 2 (or even 4) in series with a higher voltage driver...

It really depends on the flowering time: 120 days autos grow a lot bigger than 70day autos

@mscritch Youre trying to do this right? Its hard to see cause theres no pics where both ends of the strips can be seen, the connections of the top part depends on how its wired on the bottom. The current needs to follow the following path on every string of 2 strips in series: 1 Driver +...

Try those diablos on minimum dim, might work. Trying one on full dim should not work so quite normal.

What temps/rh can you manage in there and how much light can your plants handle. Impressed with all those green stems, almost nothing purple, hats off :)

I just dont think this is as well thought out as you may think. Id fear it giving contact burns or just not really doing very much at all; whatever heat this brings to the cannopy would likely go everywhere in your grow room due to necesary airflow. Except the heat that gets transferred...

If all else fails, try speaking to @Moflow ; i hvaent seen anybody grow in the cold like him, and also a very helpful dude.

A question re the 320-54AB: it only comes with onboard adjustable current? No adjustable voltage? Seems hard to get a clear answer theu the data sheets. Also, when you say wont light up, no light? Or blinking light? At what current did you try to run them? Usually for a white diode youll see...