2 hlg 600s and your set 1500$ give or take 100
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Missing heatsinks i think?
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@brucealmighty what’s the dimensions on that bad boy
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Based on single slate dimensions, I would guess roughly 3’x3’. Interested to know myself, definitely a nicely built fixture.
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Good catch. Would put the qbs with single heat sinks at around $100 each assuming hlg gets back in stock, or ledgrowdepot. Adding another $150 to the light build above and putting it just $40 below the premade scorpion.
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Lol no my veg and flower are not i same space,they in same basement but completely separate from eachother.
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Yes makes perfect sense and has steered me towards something else entirely!
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You should be able to go do Google search and find 10% off code that would work on either the fixture or components.
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@dbrn32 do you have any experience with the Ali lights from Meijiu? After reading more and more threads of more lights is better, wondering if I would be better off doing say 6 of the below meijus ( basically a hlg 550) and covering 8x12 ( figuring a 4x4 pattern per light for optional coverage) and maybe adding a few more plants than I wanted. I have the space available. 6 shipped would be roughly 2k, 2 scorpions after discounts is around $1600.
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No experience with them that I remember. I did order boards from a different company over there though. It’s been so long I don’t even remember the name, sorry. The stuff that I got was pretty legit. Out of 50 boards two had water stains on the back of pcb and two that I know of have had connectors break. No judgment there because thst could be end user, and also happens to similar hlg boards.
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So your trying to mimic 2 scorpions in a 8x 12 @Mittenman99 but independently hung 288s?
That seems quite a bit low on neccessary light for 120 sq ft u need up around the 2500 watt range of light to light that area right …in a situation if you can afford to light the entire tent buy what you can in stages and fill the room from side to side starting on one side and filling tword the other so u can get reflectivity use from you walls u want to use a a scorpion per 5x5 area scorpions I dont think are then best shape for your room 8 300hlg kits would better suit that space
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@fano_man. Sorry I was confusing l
I have total space 16x12. My original thought was to just use 5x10 of it for one grow and have two scorpions ( before the sale this was about a 2k purchase 1500 ish on sale and code ). After looking around it seems like I can cover much more area than 5x10 for the 2,000 I had budgeted so i opened it up to 8x12 for the coverage of the 6 Ali lights. Still open to any other options though I just need to pull trigger in January if it’s certain HLG lights
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Hlg all the way. Or equivalent (strips). Which would not be China lights. Don’t make the mistake of thinking you’ll save by buying alibaba. The reason it’s cheaper is because it’s cheaply made with less. Smaller heatsink, lower bin diodes. Less efficient. Less ppfd per watt. I have 33 quantum in my room. 12 are alibaba. And I have a apogee. Go with hlg. Decide you space and make multiple lights. Forgot to ask CO2 in this room? You’ll need it.
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Hi everybody, my first post here after 3 days reading all the post and catching up.
@dbrn32 I have a question, I am planing to do the lights for my room using COBs on the cheap but also on the smart side. I been working on the design and looking for components and before I pull the trigger I will like to run this by you.
According to what I read the recommended is 25w/sqft, I was checking on alibaba and found this cobs LINK.
I know these are Chinese off brand type of light and I really doubt those are 10w, maybe 7.5w or 8w at most but here is my idea, run 4 of the 4000ºK per sqft and add 2 more cobs 1 3000ºK and 1 6500ºK in the middle, those will be independently controlled, so the 6500ºK will be turned on during veg state and the 3000ºK during flowering state.
Another point is to not run the lights at 100% capacity but between 60% ~ 80% based on the needs, so that will make 8w * (60%~80) * 5 lights= 24w~32w/sqft. With this the heat generation will be reduced and the power efficiency increased that in the long run will save money on construction material and in electricity bill.
For heatsink I was thinking of using this from heatsinkusa LINK with active cooling and for power 2 x HLG-480H-36A (my grow area is 24sqft so technically I will be needing about 600w and its better to have some spare power and also more efficiency if running each one around 60% load).
So here is my question what do you think about this idea, I want to get as most input as possible before I pull the trigger and start ordering stuff.
Thanks.
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There are flaws. The biggest and probably not worth even going much into the others, you have cv/cc driver specified and will be mixing different leds. That is a treacherous because they can have slightly different voltage and current characteristics. Even same led from different lot number can cause problems here. This opens door to potential fire issues, which should put it dead in the water.
If there wasn’t an issue there, here is what I would tell you… The performance specs on those cobs is pretty low. Pretty much in line with decent a19 or a21 bulbs. You could get similar performance out of matching similar layout with standard bases and that type of bulb. I’m not necessarily recommending that you do this, but I would go with bulbs before went through the hassle of fixing the flaws with your plan. Then you could just remove diffusers from bulb and screw different bulbs in for veg or flower. Also worth noting that 25 watts/ft² would be for using equipment that performs closer to 200 lm/watt. If you’re going to use stuff that performs half as well, only makes sense that you will need close to twice as much power.
How much were you figuring this would have cost you to build? 24 ft² buying off the shelf light is gonna start around $800-900. Building using typical stuff probably start around $600. I’m happy to help work through whatever ideas you have. That 2.079 from heatsink usa is pretty good when matched up with the right leds, have built a few lights with it and their 1" profile.
I use 2.079 with samsung f series double rows because there like 1.6 or 1.7 in wide they are awesome strips and online to the 1 dollar a watt in diy build… I think they were more then I coulda asked for for the price 408 true watts for 425 bucks all high quality items no Chinese off brand stuff with reputiple dealers and great customer service . with great warranty honoring …I had a single samsung f series strip have a short in it when I built my first fixture contacted digikey where I ordered from and they got me a new strip to my houseninn2 days from the email I sent… GOOD LUCK on alibaba
Ok I see you what you mean, I have some electric/electronic background, maybe to fix the fire issue I could have instead of 2 480w led drivers maybe 3 320w, one of those for the middle lights (48 in total only half on) You think is this a better approach?
For the COB I am gonna keep looking for better options, the idea is to have something that works and its efficient. I’ll keep you posted.
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You would need to go to constant current driver. Ie something like hlg-480h-c2100. Although for leds you posted above would have to be something like 500ma output current. Then you would have to consider output voltage of said driver, not to exceed total circuit voltage maximum of cob holders or related equal. Most of the time this is in the 150-300v range. Let’s say hlg-120h-c500a for example. 300v max fv with 500ma output. If you’re trying to build 1000 watt light would need 6-7 of them.
Doesn’t make a lot of sense to do that in my opinion. But that’s how you would mix those leds on same drivers. It would probably make more sense to use larger more efficient cob. But then you’ll also need bigger heatsinks, and that becomes an entirely different build altogether with different drivers, different heatsinks and different cobs.
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You’re just the man I need to speak too. @dbrn32
I’ve been really thinking about getting a second light. The one I have now is good, but I know
I can do better. In your opinion and professional expertise, if you had to buy just one LED for
veg to bloom, which would you buy?
HLG 225 = $299ish
OR
v2 qb288 board w/288 Samsung LM301B diodes, 3000K, 80CRI, w/36 deep red 660nm,
MW HLG-150H-48A driver with internal dimming knob.125w pcb voltage 48A. = $130ish
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