Maybe it's just me, but tiny plants like CFL first.

S

Smokenpassout

Well-Known Member
I tried vegging seedlings with LED and CFL. My findings were that if I start plants on 5000K cfl's at close proximity (1-2") they grow faster than if you start them on LED (18 inches above). Now I just use the CFL's for the first few weeks alone. Then when they hit about 3 weeks, I lose the CFL's and move in a 150 watt all blue led. Then I graduate to a 350 watt purple Led at about a month and a half. Just my observation.
 
hillbill

hillbill

Well-Known Member
High quality white LEDs of 3500k or more will do the best with less heat and use 30 to 40% less power. Win,win,.......win. Most white Cree, vero etc. have great spectrums and I know 5000k and warmer will deliver all the way thru.
 
P

PurpleBuz

Well-Known Member
Smokenpassout said:
I tried vegging seedlings with LED and CFL. My findings were that if I start plants on 5000K cfl's at close proximity (1-2") they grow faster than if you start them on LED (18 inches above). Now I just use the CFL's for the first few weeks alone. Then when they hit about 3 weeks, I lose the CFL's and move in a 150 watt all blue led. Then I graduate to a 350 watt purple Led at about a month and a half. Just my observation.
Click to expand...
let me guess you have relatively low ambient temperatures.
 
S

Smokenpassout

Well-Known Member
Well, switching to an all led grow eliminated the high 80's temps of an all cfl grow. I usually run a 76-78 temp with 55% humidity. In the colder months it can drop to low 70's, so I add a monster 105 actual watt (2700k) cfl to warm things back up to 78, it serves as a mini heater.
 
Last edited:
P

PurpleBuz

Well-Known Member
Smokenpassout said:
Well, switching to an all led grow eliminated the high 80's temps of an all cfl grow. I usually run a 76-78 temp with 55% humidity. In the colder months it can drop to low 70's, so I add a monster 105 actual watt (2700k) cfl to warm things back up to 78, it serves a mini heater.
Click to expand...
that may be why your young plants do better for you under cfls. more waste heat. but for warmth a heat mat or a heat pump is a cheaper source.
 
You must log in or register to reply here.
Top