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thats prob about 50-70W if i had to guess. im sure the housing is pretty indestructible if you need that. the intense focusing wont do you much good unless you want to hang it 3 feet above your plants go buy some $5 15W (100W replacement bulbs) at walmart or home depot. will do you just as well

were still around. not much new in cobs. luminus gen 4s available soon, about 8% efficiency bump over gen 3

are they 80 or 90 cri? the fact that they are samsung doesnt tell us much

clu049 are available now they are not gen 7, they are a different line, the 'high current' series

as long as its straight water it should be fine, it would evaporate instantly near cob. if you were spraying something like nutes or neem oil that could concentrate thats another story

cobs/boards/strips all are similar in cost effectiveness right now. for any of them its about running the latest gear at low enough current to get the target efficiency you want modding your mars unit right now to have a fixture you can use to get the hang of the intricacies of using LED isnt...

you can flower with MH, wait till you can afford the LED you want. even if you shave 100W youre only talking like $5 a month, no rush

its a lot easier to provide adequate light without stress with long day length

can someone rec me a TC kit that has all the required chems? i know where to get sterile test tubes and clean room tools i just want a kit with HQ agar and all the hormones i will need

there is a zero degree difference in heat generated by a 600W HPS and 600W LED. the 600W LED will give off more light in most cases, however

if starting from scratch nothing touches LED for operating cost, even considering higher capital cost operation of 1000 HPS cost $637/year at 12/12 and 0.15/kWh at a typical efficiency bump of 20-40% over HPS, an equivalent 600-800W LED rig saves $125-$250 a year over HPS not including the bulb...

heres all the parts for a 9-cob kit that can do a 4x4 - 5x5 space, ~750W max, dimmable. $580 (pm me for code for free shipping on the kit) 9 cobs and holders 3 hlg 240-54B drivers 24 ft of wire 50K pot 11 5slot wagos -6 (2 ea) for DC side of drivers, 3 to wire AC to all drivers, and 2 to gang...

parts for a 9 cob rig to match an HPS are around $550

difference is subtle. 90CRI has plenty of far red and 3500 has slightly more PAR/lumens than 3000

you sure about that? was caught up on emails AFAIK, ill take another peek

wouldnt hurt to read a bit about LED efficiency. the two leds you mentioned will put out about as much heat as an HID

can you email me at sales at cobkits.com easier to discuss back and forth there

that 16 cob light i mentioned, 3500k 90 cri luminus cxm22 it would be dimmable. max wattage could be as high as 1200W. can be dimmed to 120W. the more you dim it, the more efficient it gets on a grams per watt basis definitely. on a max grams per square foot basis would probably be the same...

1600W per 4x4? so 3.6lb = 1634 g = ~1 g/W sound slike youre doing it over more of a 5x5 which is 65 g/SF the yield per SF is definitely acheivable with LED. you could probably get close to 1.5 gpw from the efficiency combined with the better directionality for side lighting 16 cobs in a 4x4...

so each 4x4 has a 1000W DE centered over it, but youre also using 400s and 600s as side lighting. whats the total wattage and total canopy area?