New Kind LED light - use UV from the beginning or no?

BonesBuds

BonesBuds

Active Member
Hey all, Penny for your thoughts.
I've been using this light, I recently purchased. https://www.kindledgrowlights.com/products/x420
It has a UV setting that I'm currently using at 25% for my indoor grow. Thoughts on using this during seedling/veg stage?
Reason why I kept it on, I noticed it helped keep the tent warmer (its winter where I live), but fear it might harm my young ladies. They look to love the lights though.
Thoughts?
 
YoZeitgeist

YoZeitgeist

Well-Known Member
Typically IR will increase temperature more then UV will but as long as your UV isn't too intense and or bleaching your babies then they'll be fine. Remember these plants grow in sunlight just fine as well and plants are really good at telling you what's wrong and what's needed even though certain symptoms overlap.

If you see any yellowing and it's only at the very top of your canopy along with the nodes directly under new leaves then it could be light stress which can occur even with grow lights without UV. My babies were just fine under full spectrum lights which includes UV and IR, infact they grew better/faster under my full spectrum lights this grow then my first few grows which had led lights without UV at all.
 
BonesBuds

BonesBuds

Active Member
YoZeitgeist said:
Typically IR will increase temperature more then UV will but as long as your UV isn't too intense and or bleaching your babies then they'll be fine. Remember these plants grow in sunlight just fine as well and plants are really good at telling you what's wrong and what's needed even though certain symptoms overlap.

If you see any yellowing and it's only at the very top of your canopy along with the nodes directly under new leaves then it could be light stress which can occur even with grow lights without UV. My babies were just fine under full spectrum lights which includes UV and IR, infact they grew better/faster under my full spectrum lights this grow then my first few grows which had led lights without UV at all.
Click to expand...
I had been noticing a little "yellowing", not sure if its the UV/IR that's causing it though. This light has those two combined BTW.
I went ahead and turned it off for now and will reintroduce the UV/IR when I start 12-12.
 
Isawthelight

Isawthelight

Well-Known Member
The pistols will tell you when you're UVA LED's on time is too long. These Blue Dreams have burnt pistols from running my SF-UV30 strips for a two hour continuous block in the middle of the day. I reduced the on time to an initial six minutes per daylight hour and have incrementally increased it to ten per hour. Plants look much better now.
Picture is a month old.
SF-UV30 two hour on time too long.png
I use a Sonoff S31 smart outlet's 'inching' mode to turn on the UVA LED for a few minutes per hour.
 
N

Nope_49595933949

Well-Known Member
Isawthelight said:
The pistols will tell you when you're UVA LED's on time is too long. These Blue Dreams have burnt pistols from running my SF-UV30 strips for a two hour continuous block in the middle of the day. I reduced the on time to an initial six minutes per daylight hour and have incrementally increased it to ten per hour. Plants look much better now.
Picture is a month old.
View attachment 5260420
I use a Sonoff S31 smart outlet's 'inching' mode to turn on the UVA LED for a few minutes per hour.
Click to expand...
How far away are your uv strips? I also run a 30 watt uv bar and I run it all 12 hours, no burn.
 
Isawthelight

Isawthelight

Well-Known Member
Blue Dream on day 50 of flower with 10 minutes of 30 watt UVA per hour (120 minutes total). Does she look burnt?
Blue Dream 50th day of flower 2023 Feb 15.jpg

My two Spiderfarmer SF-UV30 LED bars are 18 inches above the plants in a 4'x'2 tent. Main light is a Grow Light Science's Progrow 320. 1st grow with UVA LED.
 
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