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4000k 80 CRI for veg 3000k 90 CRI for flower 3500k 80 CRI for full cycle

Just because it's DIY doesn't mean it has to be sloppy. :wink:

As long as both fans are on at the same time, and the path from the Y to outside is less restrictive than the paths back to the tents, you'll be fine. If you plan on running the fans at different times, you might want to get back draft flaps.

Honestly dude, it's probably better over there. Any asshat that can pass the written here can jump on a Busa or a Super Duke that same day and pretend they're fuckin Guy Martin. Then there's the giant hillbillies on their 1000lb cruisers towing trailers and shit along the coast roads, blasting...

@ttystikk the licensing procedures over there are fucked man... good choice on the GSXR Cola, nimble little machine. My 86 Shadow 500 is in about 1000 pieces in my shop. I'll post her up when I get a chance.

Cola I'll step in here... The meter gets wired to the AC side of the driver, not the DC side. This is really convenient when you're running multiple drivers or high voltage, but you have to factor in about 6% driver loss to your wattage. There are different styles, but they all have wiring...

No, they won't blow hot air down on your plants. It will blow horizontally out the side of the heat sink, the only way it could possibly go, then will rise to the top of the tent/room. I'm sure if you visit the website they will list how much heat it can take. I would go with Arctic Alpine 11 or...

This is also true. But op seems pretty set on Cree.

Then there's your answer. CXB it is.

I'm running about 5-6% of total wattage in those SemiLEDs UVA diodes from Rapid in the cab. Just barely UVA at about 395nm, but they are for reef tanks after all. Assuming the mid-level NF3 bin, that's about 693mW/sq.ft., which correlates to about 37mW/sq.ft. of UVB using the 95-5 ratio. Seems...

Honestly man, you will get pretty much the same results from all of them. You might be able to put out a few more photons with a certain chip, but are you to the point in your growing that it will really make a difference? Pick a chip that suits your design. Want the lowest startup cost? 1212...

You'll be golden. I also just received my 1216s from @CobKits. Thanks for the fast shipping and excellent service!

Day 32F: Quick update. No real news.

Got it, thanks Rahz. I'm working on digitizing the 1216 SPD. I'll post up some numbers here when I'm done.

Lm/w does play a factor in the conversion to PPF though right? Or am I mistaken?

Yes, but make sure you get the "Alpine 11 Plus" those have the larger heat sinks and built-in mounts. They're rated to 90w TDP per the sec sheet.

I'm not so sure about the lm/w number you posted for the 1216s. Seeing as that is their newest Gen6 chip, wouldn't make any sense for them to be worse than the 1212s. What drive current is that at, 1400ma? Also, for the coolers, go with the Arctic 11s. They're cheaper than the 64s, rated for...

Day 30F: I think I've finally figured out what this weird yellowing is, and it's a combination of things that are my fault. I haven't been watering to much runoff lately because it's a pain in the ass to soak up the water as it comes out (yes, I know about the bucket-head, no I don't have...

This is pretty sweet! Thank you for posting such detailed build videos, I'll be building one very soon!

Yes, and yes. Lol I also like to step away for little vacations here and there though. I see automated drip systems in my near future... 8-) I'll dig into your thread a bit more, let's chat in pm. Stoked to hear you're upgrading as well! Undecided on hps/led or on which strain?