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I think i know why youre having problems here; in parallel connections the current divide evenly every string right? Not exactly It only does so if the resistance on each string is equal (in the case of leds the forward voltage, what we all refer to as just voltage). The current over each...

Though i agree on this, voltages being very similar within 5%, its probably doable but i feel it introduces your build to Murphy's law somewhat; an uncontrolled element. It just seems like building in a safety hazard into your build. Maybe im just a worrier and its all ok but id avoid doing it...

The thrive isnt horti, its "human centric" : super high cri and expanded blue spectrum but low efficiency, both photon and and lumens. If it had about 25-30% more output is love it for horti but too much of a sacrifice for me. If efficiency wasnt an issue id love to try the 2700k thrives for...

"--As for your last questions: I ordered a temp/humidity device to measure with, but it's yet to arrive so I am not certain what the temps were when the leaves drooped. Looking back, it def could have been simply the light being too intense at 75%, but another variable it took me awhile to...

Can you tell me more about the anti sulfurization of the pros? What does it consist in and what difference to standard 281+? Its not a gotcha, im genuinely interested as im looking into making some boards with 281s and appreciate any info them. Re "the horses/samsungs mouth": Im not convinced...

Looks like quite happy plants but you have tip burn on most leaves, are you feeding too much? It could also be from over transpiration when you turned up the light but not too sure; it goes counter to leaves becoming droopy when raising temps and light intensity. Vipar 1500xs : this light...

Mounting strips to sheet metal is quite attractive for cheaper strips; it lowers sinking costs quite a bit. One thing to keep in mind though: sheet sinking will radiate heat from the top and the bottom equally while traditional sinking (and U-channel) radiates more on the top. This can actually...

Constant power drivers are kinda designed for this but i dont know of a 630w constant power driver.

Theres literally no info online, pro grow doesnt even seem to have a website. The only way i can think off to figure this out is to check an actual driver, photo and upload the driver label, and we can figure it out. Was it gifted by a friend? Whos got the driver or another light of same model?

OP: youre correct in that autos on longer hours dont need quite as much light intensity as photos. But the amount is not something you can get by asking people online, you need to read the plant. Nobody will be able to tell you how much to give without a few images of the plant in question and...

The sticker price is somewhat confusing since its aussie dollars (much lower exchange rate than US$) and the price also includes 10% state tax which would be deducted at international sales. Cutter also used to do discounts to first time buyers and have a FORUM10 discount code for another 10%...

Also, what happened to the old light? Why not juice it up with reds and uv since you already got the white midpowers?

Ive worked with blux ebs slim version; didnt like them very much to work with but it was the only way for me to get reasonably efficient 90cri from one of the major dealers. My issue with the slims; they are quite flimsy and have very little pcb to them. My second issue with these is the low...

Fwiw, those values are really close to bridgelux gen3, at least on low power. OP: id rec checking out growlights Australia and cutter electronics if you want some more "growy" alternatives but prices go up a bit.

What area covered?

Bringing in cold air into your lung room will generally raise your RH; cold air holds less water, so for same absolute amount of water in the air but lower temps then RH goes up.

OP: what you are describing in totality is a situation where you should try to grow outdoors under the sun. Never seen anyone pull this off or even try. The amount of equipment and power to do a 2x2 seems excessive; id either grow in the sun or just buy some bud to smoke. If you have a basement...

Some Sipers says top watering first, no water in bottom res, in order to build root growth in the entire pot so that it can absorb nutrients well. Once healthy roots in most of the pot fill the bottom res. Dont have a horse in this race so do what you like and makes sense to you :)

No, i was saying just put it in as is, i dont wanna advice anyone to saw things in half even though it looks like you could reasonably do it if technical minded. But just dim it down a bit. Looks like if it fit. Since all rows light up the same id just write off those diodes and use it.

Just use it at half power, should work fine.