Recent content by bigstan

I have Evercool Nano Diamond HTC-01. Now it is time to choose grow tent. I'm looking at Pro Box Basic 60(80) for $103(114)and Secret Jardin Hydro Shoot 60(80) for $96(117). Anyone using them? Do i have enough power to light up 80x80?

So i ordered 5x CLU048-1212C4-353M2M2-F1, 5x CPU Active Coolers, 5x solderless holders, 2m frame and elg-240-c1400a. For $150 total.

https://www.biorxiv.org/content/biorxiv/early/2017/11/07/215095.full.pdf https://www.biorxiv.org/content/biorxiv/early/2018/03/30/289280.full.pdf Someone should probably stick it on this forum.

According to urbandictionary blurple means blue and purple mixture, correct? These? https://ledgardener.com/forum/viewtopic.php?f=11&t=761 https://www.digikey.ca/product-detail/en/bridgelux/BXRV-TR-2750G-2000-A-15/976-1728-ND/7560388 Also about CRI. A lot of people advise to get 3500k 80cri...

My bad, of course it is PPF, and i'm not sure about those calculations at all. That why i was asking to check those calculations, i got them on this forum. I live in Russia, sending stuff here. You are right about VAT, it automatically deducted, I was confused with that line though. If i...

That's an interesting option, included it in my chart, but VAT makes it 24$ wasted (although that's a price of COB cooling) + shipping is the same as from the USA. I'm in EU geographically, but politically we are competitors, there is a lot of limits, sanctions and taxes. Also that made me...

I'm going to cool my cobs (if i will not change my mind to use boards as Rocket Soul suggesting) with active cpu system, they cost about $5 each, so $25 at max in total, but it is pretty easy to find them even cheaper. Also i have 360mm radiator with pump and reservoir, so it can be fun to cool...

I thought 4 COBs of Cree, VeroSE29, cxm-22 or clu048-1212 would be fine for 60x60 cm. Now thanks to getting rid of reflectors/lenses it became even cheaper and all of it fits under 200$! Keep in mind im counting only cobs+driver+shipping, other stuff is available almost free. Can you guys tell...

That's the deal i was writing about, mainly because it offers free shipping. Also I have found original distributor of Meanwell company in my country, so it will be even cheaper here and shipping is my main concern, because im from Russia. What's wrong with reflectors by the way? What about...

3rd post At first I was leaning towards 5x clu048-1212 gen 6 option, there is a pretty good deal on ebay, they selling pack of 5 for about $68. Holders, reflectors, driver, metal and cooling i can buy from local stores. In the end it will give PPF of 400-450, if calculations are correct.

(post to meet the requirement to put links, now i need 2 likes)

Hello, RIU. I need some help from expirienced LED users. First of all I would like you to look at my spreadsheet and tell me if my calculations are right: lm = lm/W * W total eff = lm/W / 325 ParW = W total * eff mmols/s = ParW * 4.66 or mmols/s = lm / 65...