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Seriously dude? I already answered that when you asked the first time. Get off the fuckin internet.

Side by side! Version 1.0 vs 2.0.

Listen to green genes. If you want to absolutely match (and exceed) a 400w HPS, 5 CXBs at 50w each is very nice. You will get a better spread if you build it right as well.

icmag organic section but he doesn't post there anymore. A lof of his quotes and info get passed around there quite frequently. You should also check out the Adam Dunn show, clack was on there a few weeks ago with Jeremy. Good listen for sure.

I keep them about 18" away and probably a little less for the new 700mA light. Only time will tell, just finished it when I posted pics. @Airwalker16 HTG Original Stacker <- link

No they are 36v and it is passive. My older light is 36v CXB3070s with Arctic Alpine 11 Plus CPU coolers.

FYI the sinks are 26" long and the 5.886 profile.

It's going into my 3.3' x 3.3' so about 11 sq feet. I will be daisy chaining it to another CXB3070 light you can see further back in this thread. So 400 total if they are both at 100%.

4 CXB3590 3500k 4 CXB3590 3000k HLG-185H-C700B 5.886" HS USA profile

Cut out holes and added them.

It was all from amazon. Project box is what I started search for till I found a good size.

Two simple veg lights I built with Vero 18s, $8 drivers, and an Arctic Alipine M1. Gets a bit too hot to be fully passive but the air flow in my tent keeps them warm at the most. ~30w each, driving at 900mA and should be ~41% efficient.

Almost done!

In my experience, a more powerful light will exacerbate deficiencies that already exist. I added some CXBs to a grow and my cal mag issue got way worse within a day or two. Take a picture and move the lights up.

Why wouldn't you just use a non-fabric pot?

@Organicgrow42 were your plants green until the end? I just finished up my first rols run and I don't find the smoke to be any harsher than when using bottled nutrients but I also wouldn't consider it smooth either.. it's still smoke after all. I'm also shit at detecting subtle flavors, smells...

Thanks for all the responses! Might go with the Kelp, Crab and then add in the Neem/Karanja 50/50 mix from BAS. How much should I use to avoid the bad taste @GreenSanta? Also up in the air about minerals, if you had to choose 1 source, what would it be? Does gypsum count?

I'm going into my second round of 15 gallon no till pots, I only added some EWC mid flower the first round. What would you guys recommend to top dress with on top of more ewc? I was thinking maybe something like this for each pot (2 cu ft) 1 c Kelp Meal 1 c Crab Meal 1 c Some sort of rock dust...

Yeah, 64.01% for the 3500k CXB3590 36v @ 700mA but we may be talking about different COBs.

64% efficiency bruh. The more sources of light (ie COBs), the more even your canopy will be as well.