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pot calling the kettle black here mr COB fixture. You should just slink back into the anonymity of the internet with a new account you didn't use to show us all how ignorant you are.

If anything, my comments would make me a Samsung cultist as I have repeatedly mentioned Samsung strips, and I didnt compare it against HPS, you did. I compared it against COBs, which are less efficient. lol, the fact that your comparison was 14 cobs vs 6 QBs just underlines exactly what I...

Even now that you are finally acknowledging the difference between a PCB and a light that uses several of those PCBs in a specific configuration, you are still ignoring the Samsung strips that several of us have mentioned. The fact is watt for watt, these LM561c s6 diodes are more efficient...

No, I get what he is saying. If you change your light at the same time that you are rapidly gaining experience growing, then what increased your yield? Was it your light, or are you just learning how to grow better?

check out grand master level on youtube, he's doing a larger side by side grow right now 1000w hps vs 550s

or more boards, it isnt like his custom COB rig is only 6 COBS like the PLC-6. Hes just pretending not to get my point, because then he has to admit that maybe his new light isn't quite the modern marvel he thinks it is, but is in fact a minor step backwards in efficiency.

no, it is, you're just intentionally playing stupid because you know I'm right.

If that's true, then the only difference between your light and the PLC-6 is semantics. You are just intentionally avoiding the obvious point that a custom light made of 4 or more quantum boards(or of F series strips for that matter) would have done the same job for a similar amount of money...

You keep using the term "quantum board" interchangeably with the HLG550, that would be like us using the term COB and PLC-6 interchangeably. An HLG550 is 4 quantum boards at 2100ma, but you can use any number of quantum boards in any configuration to achieve the spread you desire. Just like a...

not really, all he says is that he likes this custom cob array more than an HLG 550. A custom QB or samsung strip build would have done the same thing for around the same price with less watts.

what year is it?

They are great

@Stephenj37826 You mentioned on the GML live show that UVB may increase the quality of the cannabis grown under QBs. I'm running 3x 288s @ 1750 fixtures over 2x4ish areas, how many watts of UVB should I be looking to add to each 2x4 area?

https://www.mephistogenetics.com/ shipped to me from colorado They have some amazing plants, the sour orange livers I grew was outstanding.

I only have type A drivers(6 of them), every single one of them goes over 10% above the rated current using the onboard pot. They come at their rated current, and you can turn them up further. Pop that little rubber cover off your A driver and turn it up, it will go much higher than rated. I...

additionally, per HLG(robin I think) in the QB thread the type a drivers can be turned up to 10 or 15% past their rated current, the type b drivers only go up to the rated current.

Before I started growing my own, I used my debit card at the dispensary.

http://scialert.net/fulltext/?doi=ja.2010.102.110&org=11

and that "yield" is subjective Some people will weigh anything with trichomes on it and call it yield Use these measurements as a you vs you thing, they don't mean much as a you vs another grower.

HSO Purple Trainwreck under 3xQB288 @1750ma covering 2'x4'