New Grower can you stunt plants if your LEDs are too close?

[mrmojo420]

I have 7 amnesia haze autos and after 33 days the tallest is 5inches. I think I may have stunted them. I have gone over my journal and cant figure out how. The plants look very healthy but are just small. I am growing in 5 gallon pots with promix. I have 2 300w LED lights. I am using foxfarm nutes. temp is at a steady 74 degreesF and RH is 60% my light cycle is 20/4 Unfortunately I dont have pics to show. They are beautiful plants just really small. The only thing I can think of is that my lights were too close and they didnt get the stretch they needed when they were seedlings. Any help or opinions would be much appreciated

thanks to all in advance

 

[9bear]

I have 7 amnesia haze autos and after 33 days the tallest is 5inches. I think I may have stunted them. I have gone over my journal and cant figure out how. The plants look very healthy but are just small. I am growing in 5 gallon pots with promix. I have 2 300w LED lights. I am using foxfarm nutes. temp is at a steady 74 degreesF and RH is 60% my light cycle is 20/4 Unfortunately I dont have pics to show. They are beautiful plants just really small. The only thing I can think of is that my lights were too close and they didnt get the stretch they needed when they were seedlings. Any help or opinions would be much appreciated

thanks to all in advance

Patients grasshopper patients .

 

[Torched]

I only have my experience but I certainly feel like I have stunted plants by keeping my LEDs too close. Always trying to keep them as close as possible HPS style but now I keep them at least 30" above the canopy till stretch is over. This seems extra important when you are starting seedlings.

How close do you have your lights?

 

[dingo]

I beleive you can stunt auto seedlings with too much light and heat. I use flouro bulbs for the first 2 weeks as a 300 watt LED is wasted at a large distance away. Then I flip to LED only and remove the flouros.
Autos are such delicate creatures in the infant phase and keeping them happy makes me happy.

 

[EverythingsHazy]

Yes, you can. Even if the led's dont give off much heat, they give off a lot of light energy, and can burn the tops of your plants. You can get bleached, unhealthy buds/leaves, if they grow too close to the lights. Depending on your model/wattage, and the size of the plant, it's best to have between 8"-24" inches (closest for buds-farthest for seedlings).

 

[mrmojo420]

thanks for responding everyone. Im about 20in away from the top of the plant. The plants look awesome and healthy just small.