First time grow 4 x 8 lighting suggestions

[VegasWinner]

I’m open to DIY but currently I know next to nothing about setting one up so I’d prefer pre built.
Thank you for the suggestion on the light. It looks great but something that worries me is only have a 1 yr warranty as opposed to many other companies offering 3 years.

check out ChilLed than they have Plug-N-Play and great ;lights you can not go wrong with these guys. DIY made easy

 

[Humple]

Sorry, just giving him an option as it will take him at least $1,500 min DIY to light that 4x8 area eff.
And a 600 can get a experienced grower almost 2 lbs a light in a 4x4.

It will NOT take at least $1,500 if he goes DIY. With LM561C strips, he can easily do it for less than $1/watt. It will take about that much if he goes with a pre-built HLG 600H, but those lights will last for years without maintenance, and used properly, each will outperform a 1,000w HPS. Also, he said money wasn't too big a deal.

 

[csovfnst]

I mean you could but if youre to do that might as well build a samsung strips set up right away from the start.. at 650-700w maximum for each 4x4 seems to be about the maximum you can push before you need to add co2 for additional benefits..

I do already have a full co2 system so pushing past 1400w is definitely an option.

 

[jarvild]

Im very interested to see grow journal or reports of 2pounds on a 600w hps in a 4x4.. there is not many.. most reports ive seen range between 300-600g and 600g would be experienced grower in perfect condition.. that would not even be 1.5pound off one light.. not sure where you got your number from..

Experience

 

[3GT]

Sorry, just giving him an option as it will take him at least $1,500 min DIY to light that 4x8 area eff.
And a 600 can get a experienced grower almost 2 lbs a light in a 4x4.

You're right in the fact HPS is cheaper but $1500 is wayyy to much for a diy strip build in a 4x8. Try $800 using bridgelux EB gen 2 strips or Samsung F-series.

 

[3GT]

I do already have a full co2 system so pushing past 1400w is definitely an option.

You could run a similar system to the "suncloak" in that strips would surround the plant on all sides, meaning the canopy is 3D and if you had 35w/sqft on the top of a 3' deep canopy you could run 35w/sqft on the other 2' of canopy. So you can use more than 1200w in a 4x8 even without co2. Strips really open up a lot IMO

 

[Viceman666]

ExperienceView attachment 4110642

Thanks for sharing! Are you talking about dry weight or wet weight? I always reference to final dry weight.. i am seriously amaze if youre getting 2 pounds with a 600w hps.. simply put 400w of more efficient light will get you the same result but 2 pounds off 400w LED that sounds very surprising.. are you using co2 ?

I do already have a full co2 system so pushing past 1400w is definitely an option.

650-700w should get you about 1000ppfd accross the canopy.. with co2 you can go up to 1500ppfd I think.. im not too savy about co2- and also I wouldnt recommend for your first grow but added co2 in good set up should yield you an additional 20-30% if done correctly

 

[jarvild]

You're right in the fact HPS is cheaper but $1500 is wayyy to much for a diy strip build in a 4x8. Try $800 using bridgelux EB gen 2 strips or Samsung F-series.

When I did my math for my 4x8 strip build it came to $1500 for 950 watts to replace the 2 600 for a 4x8. A more accurate conversion then the so called 50-60 watt equivalent.

 

[3GT]

When I did my math for my 4x8 strip build it came to $1500 for 950 watts to replace the 2 600 for a 4x8. A more accurate conversion then the so called 50-60 watt equivalent.

Prices must have changes then, its about $800usd

 

[jarvild]

Thanks for sharing! Are you talking about dry weight or wet weight? I always reference to final dry weight.. i am seriously amaze if youre getting 2 pounds with a 600w hps.. simply put 400w of more efficient light will get you the same result but 2 pounds off 400w LED that sounds very surprising.. are you using co2 ?


650-700w should get you about 1000ppfd accross the canopy.. with co2 you can go up to 1500ppfd I think.. im not too savy about co2- and also I wouldnt recommend for your first grow but added co2 in good set up should yield you an additional 20-30% if done correctly

Listen I'm not against you LED growers. Just stop making claims that one is inferior for this or that reason.
No co2. Open reflector in a 4x4x7 no a/c just 100% air changes every 45 sec through a carbon filter.
20 years ago i was pulling 1/4 pound every 2 week from a 3x5 perpetual running just 400 watts of hps.

 

[jarvild]

Prices must have changes then, its about $800usd

40 strips and 4 drivers

 

[Humple]

Listen I'm not against you LED growers. Just stop making claims that one is inferior for this or that reason.
No co2. Open reflector in a 4x4x7 no a/c just 100% air changes every 45 sec through a carbon filter.
20 years ago i was pulling 1/4 pound every 2 week from a 3x5 perpetual running just 400 watts of hps.

HPS is superior if your budget is limited or if you actually need some more heat in your space. After that, physics steps in and crowns LED. More light per watt, and there's just no way around that.

 

[jarvild]

HPS is superior if your budget is limited or if you actually need some more heat in your space. After that, physics steps in and crowns LED. More light per watt, and there's just no way around that.

Physics will also tell you you get more light from a 360 degree light than a flat surface emitter.

 

[Viceman666]

Physics will also tell you you get more light from a 360 degree light than a flat surface emitter.

Yes and physics will also tell you that at 360 degrees unless you do vertical grow half of your 360 degrees light will reflect and reduce the effectiveness.. at the end of the day lumens/watt is higher in those LED vs HPS and thats roughly what we should be looking at when trying to compare oranges with apples

 

[3GT]

40 strips and 4 drivers

My phones screen is way to broken to do all the math but 30 x 4' EB gen2 strips @1050ma would be 1200w and require 4-6 drivers.

Strips are about $450-600 depending on availability and then if you're 110v its 5x hlg-240h-c1050b $290 (arrow) or 220v 5 x elg-240-c1050b = $200 (arrow) and then you can build the cheapest ally angle frame possible..

Sorry I'm way too wasted to reply properly with links prices etc but ledgardener has a good guide over on his site. http://ledgardener.com/diy-led-strip-build-designs-samsung-bridgelux/

 

[3GT]

Physics will also tell you you get more light from a 360 degree light than a flat surface emitter.

Then you've got to reflect it back and get more losses/heat etc bare bulb vert obviously captures it all well. I think the key is having the perfect coverage, intensity and distance from canopy to minimise all loses and maximise what a plant can take.

 

[Slinging PAR]

Physics will also tell you you get more light from a 360 degree light than a flat surface emitter.

Yes and physics will also tell you that at 360 degrees unless you do vertical grow half of your 360 degrees light will reflect and reduce the effectiveness.. at the end of the day lumens/watt is higher in those LED vs HPS and thats roughly what we should be looking at when trying to compare oranges with apples

This thread just went all stupid like.

 

[Humple]

Physics will also tell you you get more light from a 360 degree light than a flat surface emitter.

Sorry, perhaps I'm having a dense moment, but I'm not following that logic.

 

[1212ham]

Thank you for the information. So would you recommend cob over any other setups. And I should be looking for at least 1200 theorictcal output or actual wattage pulled from the wall?

There is nothing wrong with cobs and quantum boards, but I like strips for the high efficiency and the superb light distribution. Strips can be run closer to the plants due to lack of hot spots. I think it was @nfhiggs that outlined a 4x4 or 4x8 build with Samsung double row strips in the last couple weeks.

https://www.rollitup.org/t/first-time-4x4-led-grow-dont-know-what-led-to-choose.960358/
https://www.rollitup.org/t/4x8-tent-led-build.960817/
http://ledgardener.com/diy-led-strip-build-designs-samsung-bridgelux/#

 

[1212ham]

How much heat do those 600’s produce?
Would you recommend suplplementing side bar lighting around the edges to encourage density growth? Along with the 2 hlg-600.

600 watts of LED make the same heat as 600 watts of HID, HPS etc., but LED makes around a third more light for the same watts and heat.
LED has less radiant heat so it's recommended to run air temps in the low 80's rather than 75 or so. BTW, strips are great for side lighting, I have one hanging by the wires in each corner.