400hps to 720w led grow light

[ripper415]

I have some clones under a 400hps and they are going well,I need to switch over to the bigger led to cover my grow tent area.my main question is can I switch over without any problems?what percent should I start the led light intensity?and how high off the clones should I keep light at?it is labeled a 720w for a 4x4 or 5x5 grow tent.i have a 5x5...

 

[SmokemUP]

It’s a whole different grow between hps and led. You need to run temps higher with led. Roughly around 82 to 84 degrees. The vpd chart helps.

VPD Charts in Fahrenheit and Celsius With Leaf Temperature

We made some easy-to-use VPD charts for both Celsius and Fahrenheit, for clone, veg, and flower stages. Hope you find them useful. For more information about VPD check out our VPD Guide. VPD Chart Maker and Calculator I WANT IT Table of Contents VPD Charts for Fahrenheit VPD Chart for Clones...

pulsegrow.com

 

[ripper415]

It’s a whole different grow between hps and led. You need to run temps higher with led. Roughly around 82 to 84 degrees. The vpd chart helps.

VPD Charts in Fahrenheit and Celsius With Leaf Temperature

We made some easy-to-use VPD charts for both Celsius and Fahrenheit, for clone, veg, and flower stages. Hope you find them useful. For more information about VPD check out our VPD Guide. VPD Chart Maker and Calculator I WANT IT Table of Contents VPD Charts for Fahrenheit VPD Chart for Clones...

pulsegrow.com

thank you

 

[Gmix]

I wouldn’t run your temps at 80f & above not with a led that’s silly bro science.

VPD is a guide

Ask any of the knowledgeable growers here and you get roughly the same reply 80f is the max I would run my tent

In seedling stage when they just popped I’ll keep it at 80f for a few days however that gets dropped when there a few days old.

74-80f ok you can do as low as 65-80f however optimal results are around the 74-77 mark

Yes I’ll agree halide/hps is different to led

your main problem will be getting used to the intensity of the led

Never run it at max setting you’ll fry your plants & keep it 24”-36” away
ignore manufacturers guides of 12” away

50%-75% would be fine for there age albeit some might advise only 50% atm

 

[ripper415]

I wouldn’t run your temps at 80f & above not with a led that’s silly bro science.

VPD is a guide

Ask any of the knowledgeable growers here and you get roughly the same reply 80f is the max I would run my tent

In seedling stage when they just popped I’ll keep it at 80f for a few days however that gets dropped when there a few days old.

74-80f ok you can do as low as 65-80f however optimal results are around the 74-77 mark

Yes I’ll agree halide/hps is different to led

your main problem will be getting used to the intensity of the led

Never run it at max setting you’ll fry your plants & keep it 24”-36” away
ignore manufacturers guides of 12” away

50%-75% would be fine for there age albeit some might advise only 50% atm

that very good info,thank you.