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If it is the conformal coating you are talking about – the clear-coat over the LEDs – then silicone is meant to be heat-resistant to 200C. If it is melting at 90C then you have to wonder what, exactly, it is they are spraying on them. Heat resistance is one of the main reasons why silicone is...

Here are the five El Dorado OG after two weeks of veg, and the day before they went to their new homes. I've also just popped seven Caramba seeds that will be going to another grower. What can I say? I like germinating and growing out seedlings, but I don't have the space to flower them all, so...

Here is the fixture. HLG said you could run each QB96 at up to 200W, so we paired 4x QB96s to two Mean Well 320 drivers each pulling about 350W from the wall, so around 160-165W per QB96. Interestingly, HLG knew about the problem and addressed it later...

Yes. I built some QB96s for a freind some years ago – I actually mentioned this in another thread. They worked really well, but the diodes desoldered themselves because the QB96s got too hot on the supplied pincushion heatsinks. So they didn't last long. Too many high-powered diodes on a small...

I'm not sure. It would depend on what you want. GLA does driverless kits that are cheaper to purchase and ship, as you can buy your own driver cheaper and the kits come pre-assembled with the correct plug end for the thrid-party driver. I know we have shipped a lot of panels and assembled...

www.growlightsaustralia.com I am not the official rep for GLA – he is also on the boards @Grow Lights Australia Growing is still illegal here in Australia so while I design the LED panels and do a lot of the test grows, I stay at arm's length from the company and let the other guys run it...

QB96s – I remember those! I built some for a freind . . . until all the diodes started to desolder themselves due to excessive heat, lol! We ran them on the supplied pin-cushion heatsinks, which obviously weren't up for the job.

I think @Rocket Soul and @grotbags covered this well. One of the reasons I really like the Nichia 2700 CRI90 chips is because of all the far red they have. Credit where it's due, HLG brought out a QB324 about 5-6 years ago that featured a mix of Nichia 3000K CRI80 and CRI90 diodes which I...

We don't have a distributor in the US. I wonder how much those Diablo boards would be if they added UVA and Far Red? Remember, that is an added cost that you don't need to spend on ours. And you only need one driver, as our UVA/Far Red run on one channel with all the other diodes. When you say...

It is. Except for cost. You need a machine bigger enough to coat large PCBs or multiple PCBS at a time, and those machines cost a lot of money. We already looked into it. It is also a bastard to remove if you ever need to work on the PCB after it has been coated. It's simply not cost-effecitve...

Clones will usually finish up to a week earlier than seedlings, too.

That Widow x Sensi Star looks the bomb! I always suspected there was a bit of WW in original Sensi Star, but you'll never get Luc to admit it, LOL! I mean, your cross even looks a bit like a Sensi Star on steroids, but with less leaf. Although I was always partial to the indica-dom pheno of...

Nichia has not taken horticulture very seriously. The best they have come up with is the Hortisolus range: https://led-ld.nichia.co.jp/en/product/lighting_hortisolis.html It's not a bad all-in-one dioode, but the maximum efficiency is around 2.8 umol/j and that includes the far red component...

Actually, Nichia diodes are about on par with Samsung in terms of pricing (around 6-7 US cents each) for their best designs, but it really depends on the type of diode you buy off them. Their most efficient 3030s are all dual-die designs, but they also have single-die diodes which are cheaper...

Wow! How did I miss this post? They look incredible! I reckon if they went 10 weeks then that will be the White Widow dominance. Blueberry is renowned for being a fast-finisher in as little as seven weeks, but it's also not famous for its yields, so again I reckon you've got real White Widow...

OK. So are you just in this thread to drop names like Mammoth and Apogee? Because it would be helpful if you could add something that we don't already know. Or maybe ask genuine questions instead of just "product placement". There is another reason we have no plans to add 530nm diodes to our...

And we have an $80,000 Viso Systems LabSpion Goniometer. Your point?

Which would mean McCree didn't measure the quenching effect of far red on the red end of the spectrum – otherwise known as the Emerson Effect. All I know is when I started seriously testing LEDs five years ago I noticed the effects of far red straight away. I also noticed the effects on yield of...

Just to add to the above, in relation to horticultural LED efficiency, you also need to look at the McCree Action spectrum, which is an overlay of the photosynthetic efficiency curve compared to the energy required to produce each photon – which is what we are doing when we convert electricity...

How do you figure that? I don't see that big green spike in the McCree Curve, but then I don't particularly want to get into a pissing match over Mammoth lighting because there is more to growing flowering plants than looking at the McCree Curve. Do you know much about the McCree Curve? Because...