Stunting

[hillbillydeville]

Always a treat, never a dull moment in the infirmary!

 

[Waira]

... not when Blooo struts her stuff up and down the halls! ...

--- hubba hubba hubba!!

 

[PlatinumLEDTom]

I always recommend start high and work your way low. Remember different strains of cannabis have genetics from all over the world. Some of them may be more light sensitive than others. Here are the recommendations from our website:

The most important concept with indoor horticulture is not only watch your plants, but to tune into them! Great care must be shown when properly acclimating young or new plants to our LED grow lights as they are extremely intense. Remember that with young plants less is more and to always make sure the leaves are happy and pointing skywards toward the light. If while acclimating, the leaves show any signs of curling or overall stress, please raise the light until the problem is solved.

1. Seedlings and Clones - 36” - 40” - VEG switch only
2. Early Vegetative Growth - 24” - VEG switch only
3. Late Vegetative Growth - 24” - VEG and BLOOM switches together
4. Flowering - 18” - VEG and BLOOM switches together

 

[PlatinumLEDTom]

Have you got 3 x P450 on seedlings at 24 inches for first ten days?

If so, I suspect that is the source of your stunted heights.

I would try ONE P450 for the first couple of weeks personally. Vegging doesn't take much light.

I have seen countless LED grows with very very short plants. Depends what you're after, but that amount of LED light at that height from day 1 will definitely have an effect on your plant heights and node spacing IMO.

Also pretty easy to "stunt" autos with overwatering at a young age? Soggy roots won't bother to spread out to look for water.

Seedlings and clones do not need a lot of light at all. We recommend having the P450 at about 36-40" from the plant canopy during this time. Maybe just running 1 or 2 of the p450s will help out.

 

[Rev. Green Genes]

@PlatinumLEDTom Good looking out. I agree, one light is sufficient for seedlings.