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What does efficacy measure? Sorry for the noob question.

I disagree agree I've grown some fire ass weed with blurpels but the yields are absolute trash. Epistar diods are a cancer of the LED community. I'd rather have 100 watts of cobs or pcbs than 300 watts of epistar garbage.

Efficiency is the ratio of Photons to heat correct?[

Numbers, graphs and charts are great and very helpful when choosing parts for a build but come harvest time they don't mean squat. Simple fact is blurpels don't put on weight like cobs and PCBS do.

I'm confused your going with garbage epistar diods over C.O.Bs or PCBs in 2018 and asking us if this is a good idea?

I'm going to buy a HLG-80H-C700B now and wait for the gen 2s to come out. Thanks for the help guys!

Good idea I wasn't sure when the gen 2s were coming out. Where's a good place to order them from I'm in the state's?

I'm liking the price on the HLG60H-C700 but can I get away with running 17watts x4 ? Thanks for the info.

Looking to build a veg light for a 2x2 thinking eb strips ran at 1000ma or 700ma. How many do you think I need? Also what's a good watts per square-foot? I'm thinking a mix of 3k and 5k. Any help would be greatly appreciated.

Can you really run theses strips without any heat sink @700 ma? I mean could I mount them to a piece of plywood ? How does this effect the life of the strips?

Lol 4k your friend's an idiot and got ripped off.

Well shit guess I better stop topping and flip soon.

Idk man I had like 3x strech I mean it was only a 210 in 32incx32inc tent.

I'm wondering when I should flip my first Cob grow? I'm running 5 Citizen1212 3000k 80cri chips. I've done a few runs under some shitty blurpels and they stretched like crazy. On average is the stretch less? I know it can be very strain dependant also.

Water them more.

Thanks for the info guy's you have been most helpfull.

Unfortunately Veros just dont magical match up like Cree. There's a whole thread about this I don't feel like bumping a dead thread.

I've looked up the spec and had debates with members if the driver will run 4 or 5 Vero' 29's We never came to an answer

I've looked up the spec and had debates with members if the driver will run 4 or 5 Vero' 29's

Thanks I'll dim it to lowest and just fire. Too much Volts isn't going to be a problem it might run 5 maybe.