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You've hooked the light up to a watt meter then? How low can you dim it? Could be tricky, obv. you don't have a lot of height to work with. I would hang the light as high as you safely can in the tent (you need some clearance between the roof and the heatsink, and a fan blowing air across the...

11 diodes in series on a 560mm strip. This option uses Cree XP-E2 diodes. https://m.alibaba.com/product/62190286397/detail.html

Which light did you order? Not one of the discontinued Diablo kits right? If you ordered from the site you linked, ShopGrowSpaces, maybe the issue is on their end. Have you contacted them?

Most likely these strips, although GG did have some Samsung LM301H and LH351H strips on the PLC website recently. https://www.pacificlightconcepts.com/product/photo-boost-strip-light-engine/

The Phlizon light may have a higher PPFD reading directly under the light, but look how low those numbers get in the corners of the 3'x3' area. If you use that light instead of the 2 SF-2000 in your space your perimeter light levels will likely be even lower than that. Have you painted the...

They're talking about Meijiu in the thread you linked, but @jonnynobody didn't get his light from them. The link he provided in the first post of that thread says Yixiou Technology Co., Ltd.

I think that's the video Rocket Soul was referring to in his post above. Clearly it's become quite well known.

You are under the maximum current of 3000mA for the QB 288 V2 R Spec boards , but the Slate 2 triple heatsink is only rated for 325 watts (in comparison Slate 2 single heatsinks are rated for 150 watts each). Have you measured the voltage on the DC side as well as the current? I guess you're...

1190mm EB Slim Gen 3 strips do have 238 diodes. 1120mm EB Gen 3 strips have 224 diodes.

Following the datasheet for the XP-E2 far red (Group 27), a photon flux of 2.1 μmol/second is calculated at 350mA. Looking at the electrical characteristics graph (junction temperature of 25 °C) a couple pages forward, the voltage looks to be about 1.85 volts at 350mA. That would mean that each...

Future Electronics usually stock some BXEB Gen 3 in 90CRI, with a minimum order of 1 tray (20 strips). The linked strips are 560mm with a CCT of 2700K. The 2700K 90CRI 1120mm strips are out of stock...

With the 10% discount code, the Scorpion R Spec is $989.10, a little under the OP's proposed budget. RIU10 . Or DIY10 will also work. Haha. Fun Fact: the Scorpion Diablo is $1259.10 with the discount code. PPE of 2.9 μmol/Joule. 3,996 diodes total. 3,888 4000K Samsung LM301H and 108 LH351H...

There are definitely some companies out there. HLG make the B Spec boards. ChilLED have a veg spectrum option for the Growcraft. Timber Grow Lights have a 4000K color temperature option for their COB lights and their new Cypress Bar light. I'm not sure if the OP is considering those, but there...

You have the QB 96 wired to an HLG-185H-54A, correct? The maximum wattage should be substantially higher than that. If you ever have a need for the higher wattage, you'll need to increase the drivers output voltage (Vo). Adding a small fan to sit on top of the heatsink would be a prudent move...

I had a look at a couple of the datasheets. I see Reliability Data, but no warranty information. Do you see any warranty info?

Is Kingbrite (through Alibaba) a viable option for you? They sell 560mm supplemental strips. They have 660nm or 730nm, and also strips with both wavelengths. They have 11 diodes wired in series. The Cree XP-E2 would likely be my choice. I'm not sure how much shipping would cost you, but this...

"The LM301H diode carries a PPE of 3.03 μmol/J." Is that what you're referring to? Do you see any efficacy figures on Budget LEDs website besides that?

Hello @RainDan , can you share your reasoning for the diode choice and quantity that you decided on for the Cypress fixture? Was it primarily a cost to value decision, or were there supply issues with alternative diodes? Does the LM561C diode have some inherent qualities, spectral or otherwise...

Close to 600 less diodes on the Cypress than on the Scorpion Rspec, and those diodes are LM561C. Those LM561C are being driven at about .6 watts per diode at full power, very close to their maximum recommended wattage. The Cypress is a fair amount less efficient, it looks to have a PPE of about...

Those are spot measurements for PPFD. 168 watts of those lights do not have a PPF output of 524 μmol/second. It will be less than that, likely a lot less. Also maybe you noticed those measurements are in unol/m² s. I didn't have high hopes that the mfr. would use the μ symbol for micro, but...