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Thanks guys.

Can't offer ant help I'm afraid, but I'll be watching this thread very closely, as I'm about to start a very similar grow (without all your experience).

@BM(AGS - I've been thinking about what you said earlier. Thanks for the details re PPFD and on how we do things in here and what we don't care about.. If I offer advice or comments on forums, I always try to help the enquirer without introducing ambiguity, so: How should the OP (or anyone...

This should help to take out some of the guesswork: (Not my data. Thanks to NOGOD here: https://www.rollitup.org/t/cob-efficiency-spreadsheets.865238/ )

Based on data for a 3,000K CXB3590 found here: https://www.rollitup.org/t/cob-efficiency-spreadsheets.865238/ and using the data you have provided, you should be producing about 76,208 Lumens, which in your approximately 0.9 square metres, equals 68,000Lux (Lumens per square metre). I'm often...

It would really help to know what amps you are running your lights at - if you tell us the exact specs of your drivers, there will certainly be someone in here shortly to give this answer, if you don't know it already. You've got about 1 sq metre there, which needs between 35,000 and 50,000 Lux...

I'm still a bit of a noob here and I was genuinely in the market for a commercially available light - I really did try to help him but thanks - I get it now. I've got everything I need from Cutter Electronics - they offer a fantastic service. Very detailed and customised specs for the GROMAU5 Kit.

Thanks for the quick response. The link is great :)

God knows, I tried :/

Hi team, This is my first proper post and I'd like to thank everyone for the fantastic resource that this site offers, particularly GROWMAU5 and Cutter Electronics, but there have been many others who have contributed to my understanding of LED grows. There's heaps of information regarding the...

Ok, maybe we are getting somewhere. Your light has 2x Cree CXB3070-0000-000NOHBB50E, which are 5,000K and 80Ra CRI. These little beauties will put out 9,500 Lumen each, if driven at the full 36V, and consume 72W each. 1. What other LEDs are in there? 2. What drivers are you using? 3. Are they...

@Ecosunlite - Dude, you are not getting it. Let me try to explain how this sort of thing works. If: you built a reasonable quality growlight case, with 4 Cree CXB3070 COB LEDs that were carefully selected to provide a range of white light of the appropriate color temperatures and specified...