LED choice for flowering stage, 4'x8' tent (120 x 240 cm)

[coreywebster]

This product is no longer available.

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m.alibaba.com

Check this. 100.000 lumen actual draw 400 watts. Power of 1000watt HP's in led.

You cant replace a 1000w hps with 400w of anything. We are a long way from that point in led tech.

 

[Keesje]

Is the ratio already 4 tot 10?
I thought 5 to 10 is already a big achievement (I still thought it was 6.5 to 10, but I learned about the 5 to 10 just the other day)

 

[VeryMuchForGanja]

You are asking for things to go wrong.

Could you please give me a hint, what would be the biggest problem with my set up?

First learn how to grow, then go to the next step.

True, I am learning sth new every day. Maybe I am not the most experienced grower in the world but it is not my first grow and I just thought it would be nice to try sth more complicated now. I do not think it is sth wrong about that, isn't it?

Of course with all due respect appreciate your feedback.

 

[Keesje]

A plant needs different circumstances in different stages.
Different nutes (how are you gonna do that?)
Different humidity.
Different amount of light.
They will grow in different sizes. So when the plants that are nearly ready will become higher and higher, you will have to raise your lights.
Which means that you will give your other plants less light.

 

[VeryMuchForGanja]

A plant needs different circumstances in different stages.
Different nutes (how are you gonna do that?)
Different humidity.
Different amount of light.
They will grow in different sizes. So when the plants that are nearly ready will become higher and higher, you will have to raise your lights.
Which means that you will give your other plants less light.

Thank you for your remarks.

The main and only purpose of this tent is to be a flower room with no veg time. All of the plants will be in there in flower phase, 8 weeks, 2 weeks in each tray. Each tray will have a separate tank (4 tanks), separate nutes in there (last tank with only water for flush). I will have 2 lamps, so I could lower one of them for a bigger amount of light during week 5-6 and 7-8. Or even place sth under 1 of the trays if more light is needed as for the others. Anyway I am planning to keep the plants not higher than 1 meter (3-4') even at the end of flowering phase.

Humidity - I thought the same RH level during the whole flowering time will be fine for all the plants. Is that all right?

I am considering trays vs. Auto pot system. I have to think it over and read a bit more about both.

P.S. Met vriendelijke groeten

 

[Keesje]

If you're Dutch or Belgian, there is are forum in the Netherlands where there is a lot of expertise and they can give you advice on stuff that's for sale in these countries.

 

[VeryMuchForGanja]

If you're Dutch or Belgian, there is are forum in the Netherlands where there is a lot of expertise and they can give you advice on stuff that's for sale in these countries.

Nee, ik spreek gewoon een beetje Nederlands en ik zag je het woord "tot" gebruiken. En je avatar zegt veel Ik weet dat er al veel informatie over LED-lampen in de forums staat, ik heb veel gelezen. Maar er is steeds iets nieuws op de markt en ik wilde alleen maar vragen of iemand iets nieuws kan aanbevelen.
Dank u wel voor uw begeleiding en hulp.

The same in English:

No, I just speak a little Dutch and I saw you use the word "tot". And your avatar says a lot I know that there is already a lot of information about LED lamps in the forums, I've read a lot. But there is something new on the market all the time and I just wanted to ask if someone can recommend something new.
Thank you very much for your guidance and help.

 

[Leon1111]

You cant replace a 1000w hps with 400w of anything. We are a long way from that point in led tech.

Numbers speak. My 240 watt produce same lumens as a 600watt HPS. I don't sell these lights. I have no benefit.

 

[Keesje]

My 240 watt produce same lumens as a 600watt HPS.

I am no expert, but I think Lumen is not the main standard to compare growlamps with.

 

[Leon1111]

I am no expert, but I think Lumen is not the main standard to compare growlamps with.

Lumens per watt is actually translated in yield grams per watt. When HPS producing 100-120lumens per watt that means a possibility to 1-1.2g per watt. The quantum boards with 230 lumens per watt like mines can reach 2.3g per watt. For me CMH is the most complete light source. Quantum boards can reach 2g per watt but in my grow space right now the plants under qbs are 2 weeks slower in flowering than plant on CMH. Also the buds have different structure. Are growing longer and still white hairs and on CMH shorter fatter almost all hairs are brown.

 

[Keesje]

Lumens per watt is actually translated in yield grams per watt. When HPS producing 100-120lumens per watt that means a possibility to 1-1.2g per watt. The quantum boards with 230 lumens per watt like mines can reach 2.3g per watt.

Still I am not expert, but this is total nonsense.
Lumen had nothing to do with how many gramms per Watt.

Also the rest of your story is total nonsense.

So better stop asking you things.

 

[norcalreppin77]

Hi,

I am setting up a flower room. It will be a grow tent, 120x240 cm (4'x8'). I am going to mimic Al B Fuct's 4 trays, every 2-weeks harvest. Each tray of four is 60x120 cm big (2'x4').
I figured I would need 2 lamps. I was thinking about two 600 W LED lamps, each above 2 trays, so each covering a square 4'x4' (120x120 cm) (2 trays).

Budget in 2 options:
1) 500-1000 USD per lamp
2) what if the budget were unlimited

I am looking for a solution dedicated for the flowering phase. Could you please let me know your opinion? many thanks in advance for your help.

I bought some knock off spider farmer4000's. The maxisun4000pb. The plants are raging on my 4x8 hydro tray. Talking 3-4inches a day in growth. They only cost me $350. Thats why i bought them. I'm in testing phase to see what is achievable with the quantum boards. The maxisun do run hot though. I'll move to strips at some point later on to keep heat down.

 

[Leon1111]

Still I am not expert, but this is total nonsense.
Lumen had nothing to do with how many gramms per Watt.

Also the rest of your story is total nonsense.

So better stop asking you things.

"Lumen had nothing to do" that's the nonsense. All about growing indoors is LUMENS NOT WATTS. This stupid method gram per watt was invented because the most efficient light was HPS with 100/lumen. That's how you count now 1g per watt. If the power of HP's was 200l/watt then you would count 2g/watt. Watt is the electricity nothing to do with grams. If you don't believe me go grow with straight sun light and on shade. What you count outside? Lumens or watt? WTF

 

[Bosgrower]

"Lumen had nothing to do" that's the nonsense. All about growing indoors is LUMENS NOT WATTS. This stupid method gram per watt was invented because the most efficient light was HPS with 100/lumen. That's how you count now 1g per watt. If the power of HP's was 200l/watt then you would count 2g/watt. Watt is the electricity nothing to do with grams. If you don't believe me go grow with straight sun light and on shade. What you count outside? Lumens or watt? WTF

Unless my memory fails me (which is possible) lumens only measure visible light, which has little or nothing to do with the spectrum that plants need. That's why all of the light mfrs reference PPFD and PAR, not lumens.
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[Bosgrower]

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[Leon1111]

Unless my memory fails me (which is possible) lumens only measure visible light, which has little or nothing to do with the spectrum that plants need. That's why all of the light mfrs reference PPFD and PAR, not lumens.

Yes umol/j, ppfd, lumens all about how strong and bright the bulb is and what quality of light produces.

 

[Leon1111]

Unless my memory fails me (which is possible) lumens only measure visible light, which has little or nothing to do with the spectrum that plants need. That's why all of the light mfrs reference PPFD and PAR, not lumens.
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If you check the yield reports from qbs most of them are over 1.5g/w and a lot over 1.8g/w. Also some over 2g/w. When most report on hps are average 0.8g/w up to 1.2g/w.
HP's 100-120lumen/watt yields 0.8-1.2g/w
Qbs. 180-230lumen/watt yields 1.5-1.8g/w.

 

[Bosgrower]

This is really taking this thread off track ... so this will be my last post on lumens as a useful metric

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[coreywebster]

If you check the yield reports from qbs most of them are over 1.5g/w and a lot over 1.8g/w. Also some over 2g/w. When most report on hps are average 0.8g/w up to 1.2g/w.
HP's 100-120lumen/watt yields 0.8-1.2g/w
Qbs. 180-230lumen/watt yields 1.5-1.8g/w.

Your getting about 170-175lm/w on a double QB set up with 240w mate. Thems the real figures

Your not equalling a 600w hps with a single 240 kit.
As good as they are, your looking at 240w QB = 400w hps.

600-650 of good LED is around equal to 1000w hps in real life.

A 600w hps bulb is around 150lm/w

I own a lot of QBs and other Boards and COBs. Been running them for years.

A lot of people talk out their asses with yields , most the 2gpw guys are using strips and using less wattage closer to get higher numbers.

 

[oill]

Hi,

I am setting up a flower room. It will be a grow tent, 120x240 cm (4'x8'). I am going to mimic Al B Fuct's 4 trays, every 2-weeks harvest. Each tray of four is 60x120 cm big (2'x4').
I figured I would need 2 lamps. I was thinking about two 600 W LED lamps, each above 2 trays, so each covering a square 4'x4' (120x120 cm) (2 trays).

Budget in 2 options:
1) 500-1000 USD per lamp
2) what if the budget were unlimited

I am looking for a solution dedicated for the flowering phase. Could you please let me know your opinion? many thanks in advance for your help.

I would get 2 of the new lumi led lights. Best in the market.

Or 8 to 10 hlg qb96 elites... awesome lights