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@bggrass just found this in one of supras threads if you find time to add the 72V that would be greatly appreciated

Thanks ttystikk

all good bro cheers

@bggrass Thanks for making this calculator man, any chance you can add the CXB3590CD 72V 3500K? I can't seem to find a spread sheet for it.

Thanks Yoda, ok the equations are written incorrectly it should read like this 7.24 x 10.7(sq meter conversion) x 4.65=360.22 instead of 7.24 + 4.65 umol/s/PAR W * 10.7 (sq meter conversion) = 360 PPFD averaged But still where did the 10.7 (sq meter conversion) come from, a square meter...

@SupraSPL hey just trying to work my specs out using this formal and just a couple of questions what or how is the .9/wall reflectors worked out...I'm not using lens but have reflective walls, is the .9 just a average or something? where does the 4.65 umol/s/PAR W come from? and how has the...

Actually I just checked HeatsinkUSA, and the prices are pretty good even with postage to New Zealand lol.....good to see I've got that option

Is there any reason people aren't using something like whats in the link below? http://www.aliexpress.com/item/2pcs-Industrial-aluminum-heatsink-heat-snk140-60-100mm-Super-power-from-cold-tablets-6063-aluminum-Engine/32225059236.html Buying 6 of them I can get those for $36USD each...

Safe, cheers Rahz!!

Is there a resource or a formula you could point me to work this out for myself for my particular set Supra? Cheers

Nice work captain, can I ask how big is that tent and what your best guess at the expected yield of this grow? edit... just seen 3x3 tent

Hey mate, Yea I'll be using for both vege and flower covering 1.2 x1.2m, more than likely scrog Yea got my COBs and drivers from KB, jerry gave a good price on some AD bin's and even better price on the drivers compered to mouser and digikey, Yes NZ is a awesome country, I'm pretty lucky to...

Edit: Hold up sorry just seeing if I have this right... so if my driver is rated at 144V and my COB's are 36V that means you can run 4 36V COB's on that driver eg: 4x36=144...correct ? the amount of volts per COB can't exceed what the driver is rated at. and if the driver is rated at 200W I can...

Yea cheers man, I just found you driver thread with the spread sheet, nice work. From that I've seen I could probably run 3x CXB3070's on the 1400B at a bit over 50w each, could I push it to 55W each? Am I correct in thinking this will give me a 330W light (6 CXB3070's @ 55W each) and is this...

Ok safe, I forgot to mention I'll be running CXB 3070's does that change anything? I take it the C1400B is suited to the CXB 3590? My thinking was getting the 2x C1400B's now will have me covered when I upgrade to something better down the track

Ez crew ;) Been lurking here for the last week soaking up all the awesome info on building lights, much respect out to everyone giving up all the goods. Anyway I'm in New Zealand and we run at 240V at the wall so I'm just wondering if anything changes the application of building and running...