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Hi rollitup, I have been looking at quantum boards for some time now and I have a question regarding thermal management on the QB288. The HLG QB288 is 6.833x11.25" = roughly 78 sq inch of surface area to dissipate the heat. At their website they state that it may require an heatsink or aluminum...

Hi Guys, I have seen a topic here before about the R strip, see link: https://invisiblesunled.co.uk/collections/quantum-boards/products/ish-sun-strip I was just wondering what you think of the red/far red ratio to utilise the emerson effect? Is it worth adding 730nm leds? Thanks!

Hello, I'm currently looking at some pcb's containing 240pcs lm301b 3500k and 14pcs cree xpe 660nm. These are in same string as the lm301b chips. I would like to run 5 pcb's at around 100w each on one driver. I was looking at the hlg-480h-2100 series as a lot of the quantum board kits run on...

Hello, Just a quick question, I'm looking at some nice lm301b boards with 240 lm301b and 16 pcs xpe 660nm. These will draw 96w from the wall. Would 3500k + 660nm be good or because of the added red would it be better to go for 4000k with 660nm? Thank y'all

Hello, Am about to begin this build with 2 rooms, each with 14x vero 29 C at 1.75a around 120w. Will mount them on 150x120mm pin Fin heatsinks together with Khatod PL1845SR ultra clear silicone square pattern lens. They will be driven in series by HLG-480H-1750C drivers and two HLG-240H-1750C...

Hello, I've been doing some research on lenses. Have read all kinds of topics here on riu and other boards. I am planning on running vero 29 gen 7 version c at around 120w on passive pin fin sinks. I have seen the khatod ultra clear silicone v type lens, silicone lens from kingbrite and the...

Hello, I am planning a big build with in total 84 Cxb3590. I want to make 12 bars with on each bar 7 cxb3590. Is it possible to run 7 cxb3590 in parallel of 1 hlg-600h-36a? Each cxb3590 will run at approx 2.4a and around 85 watts. I want to use the Arctic alpine 64 plus because it has a flat...

Hello, First post over here, have been reading for a long time about cobs and led in general. Have build a few cob lights and getting great results. This question however is about seedlings. I'm planning to build a grow tent with multiple layers of seedlings on rockwool cubes. I know white...