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Thank you!! This is an amazing insight into how modern LED lights are constructed! I'm really intrigued by the large copper traces. I disassembled a $50 sale 100w light and took a photo of the aluminum PC board. Now I can see how almost the entire board is covered with wide copper traces...

Thank you very much. I didn't know the entire board was aluminum! And, after adjusting the contrast, i can easily see the traces.

I have a technical question about thermal management with mid-power LED diodes like Samsung LM301H. Do you use thermal vias on the PC board anymore? Either under the LED diode footprint or even around the footprint? I was reading about this on a ten year old application note from Cree called...

#3 has a good deal of red, so that's something to consider. Might be more suited for flower? 2. about 5% deep red, and 1.5% far red 3. about 15% deep red, and 5% far red

$139.99 with $30 coupon. I have no experience with this light. But it will cover a 4x4. Spectrum is adjustable, too, from the looks of it. https://www.amazon.com/SONLIPO-SPF2000-Coverage-Samsung-Spectrum/dp/B09PV87W9H/

I used Amazing Doctor Zymes Eliminator, another citrus/yeast product. Or Flying Skull Nuke Em. Took a few days and then once a week.

This is concentrated Bacillus thuringiensis israelensis that is great for a soil soak.

Go to your petstore and pick up BMC Microbe Lift from Ecological Labs. :bigjoint:

Great idea working the flowering plants! With that research protocol and some knowhow you can do it. Here's a great video on youtube called "DIY Tissue Culture: How to Get Started for Less Than $200"

Hello Phlizon, I have questions. What is the new output PPFD? Do you publish PAR maps?

This product is being developed through crowd funding (interesting in itself). You'll likely get details later or even discounts for joining, I think. What do you think? $799

I've gotten serious and plan on buying a spectrometer. :eyesmoke: Found this from Hopoocolor. $500 on Alibaba, and $1100 on Amazon. Above is a cool look at the insides of their products. The OHSP-350P model is made for plant analysis. Does anyone have experience with this brand? Or other...

Ok, I just discovered Apogee has a brand new spectrometer. Now I want to rent one of these! https://www.apogeeinstruments.com/ms-100-insight-handheld-spectroradiometer/ Awesome looking from this screenshot:

You can rent these spectrum meters for under $120/2days. This Sekonic C-800 meter retails for over $1600. Perfect for setting up veg and flower rooms with different lights/spectrum. Lensrentals.com out of Memphis, TN. https://www.lensrentals.com/rent/sekonic-c-800-spectromaster-color-meter

Could it only be for amazon Prime members? I've seen that before.

Hell yeah. I feel lucky!!

In case anyone's interested, more info on giveaway here https://www.yocan.com/yocan-best-vape-manufacturer-giveaway.html Snip: How to Participate in Yocan Champs Trade Show Giveaway? The giveaway will be held offline. To participate in the giveaway, you need to visit the Champs Trade Show booth...

26.0% P2O5 x 0.44 = 11.44% P 3.20% K2O x 0.83 = 2.66% K reference: https://extension.psu.edu/how-much-phosphorus-and-potassium-are-really-in-your-fertilizer

Do you have the NPK of the guano? Guano will probably be enough, skip the bloom booster and molasses.

8 feet is a huge light. Kind of an albatross, pulling 1,200 watts at the wall.