By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
Is two 600w lamps too much for a seedling?
DrGr33nThumbstarted grow question 4y ago
So I have x2 600w LED lights. Does having 1200w of light too much for a seedling? Should I just use one untill she matures abit? Thanks in advance
DrGr33nThumb
Solved
Setup. Lighting
likes
MrStinkyanswered grow question 4y ago
it is all about managing your ppfd and DLI - if you are delivering say 300-320ppfd thats alright, if you are delivering 650ppfd that is definitely not cool for a seedling and you're gonna have a bad time, m'kay?
I would say use 1 until they are mature enough to take another light, otherwise you might quickly waste €25
LeastExpectedGroweranswered grow question 4y ago
Variables. There are more variables. The Stinkster is right...so either you have 1200w but have that light way up high to chill the PPFD down to a nice reasonable number, or you need to dim and can leave the light down a bit. DLI is light exposure across a day, so it's calculated by figuring out your plant's optimal PPFD in whatever stage (seedling), and the amount of time during the day it's exposed to that light. So a 300PPFD may be just right at 18/6 but will be too much light at 20/4 or 24.
1 like
Complain
OGSeshanswered grow question 4y ago
If you have the ability to dim the lamp, set the power to 20-30 percent and gradually increase as the plant grows.
1 like
Complain
Similar Grow Questions
Solved
Tango_Hotel_Charlie
lightsanyone ever combine a 315w cmh and 600w hps in a grow tent?Setup. Lighting
5y ago
1
5
Solved
marihoochi
Required and Type of WattageSwitching to 12/12 tonight. Currently using 2 - Spider Farmer sf4000's; need more light for flower period; Should I use a 3rd Spider Farmer 4000 or a 1000W dimmable HPS for maximum THC, Taste and Yield? The SF4000 uses 453W 12 X 6 Flower Area
Week 8
Setup. Lighting
5y ago
3
3
Solved
versace_grow
Seeds in 12/12Does keeping seedlings just the first week under a 12/12 light cycle can hurt them? I have some seeds that are not sprouting after 7 days, maybe it's because the outside temperature is too low so I decided to keep them in my growbox with my other flowering plants until they startSetup. Seeds
Setup. Lighting
Setup. Seedling
5y ago
1
1
Solved
Chaweeder
Are all Amazon lights Garage,I wanna buy some pretty descent LED lights, but dont have tons $$$$ my plan is eventually to get up to 20 autos in 1 room? I dont wanna spend 1500$ per light, but 500$is ok. I will buy more of these 500$ lights to fill up my 8X12X8 room, a few at a time, I dont wanna buy crapSetup. Lighting
5y ago
4
Solved
DabNinja710
couple quick questionsDo I need to close the flap to the vent during dark cycles? (Lights off during the day) and should I block lights coming from fan power, humidifier, dehumidifier, or indicator lights?
Also do I need to use the carbon filter the whole time?
should I ever have the exaust fan off?5y ago
3
3
Solved
GingFreecss
Light: much Power less hoursHi everyone,
I'd want to decrease the hours of light to give the plants the impression that winter is coming, but I'd want to add a led to increase the power of the light. Can I apply both this ideas?
Thank for your attentionWeek 6
Setup. Lighting
5y ago
4
4
Solved
Vegas_Kind_Budz
Is 1’ away good for now? Personal experience opinions welcomeOk Guys. My plants are 6 days old now. And I have them under this 72w light that is about 12” away from them. Is it ok to have it this close? I was considering to move it closer before moving to the hig light. Thanks for the opinions guys!!
Setup. Lighting
5y ago
1
4
Solved
Bushbaby808
Veg or Bloom mode for Autoflower?Hiya Folks 😊
As I'm growing an autoflower should I be using the bloom setting on my LED light instead of veg setting?
It's only a 200w system and I'm growing in a 3'x3'x6' tent.
My plant has just done 28 days from seed!!
Cheers 😉
Week 5
Setup. Lighting
5y ago
3
3
Solved
Bushbaby808
Is my LED up to Par??Hi Folks,
I was just wondering if anyone could help me with regards to how efficient my LED is, I've always wondered if I made a good purchase or not??
There's obviously a whole lot better out there nowadays!!!
I'm growing in a tent 3'x3'x6
Many Thanks 👍😊
Week 5
Setup. Lighting
5y ago
3
3
Solved
BearBeard
Too early to turn up the dimmible LED light on my seedling?Unsure if it's too early to turn my light up just yet or wait till more leaves are growing. Currently at 25% (10,000 lux aprox.) using the dimmer for a 120w LED at 20 inches from seedling. Thanks in advance.Week 1
Setup. Lighting
5y ago
2
2
Solved
PurpGod
Leafs curling downLeafs curlded down after I raised the light intensity to full 150w capacity light is 33in away from plant and water with mykos wp 1st time. Temps got a little high 82-84. So I dimmed the light to about 85% tents temps down to 79-80°f
Soil roots organic, kind soil at the bottom
Leaves. Curl down
Setup. Lighting
Feeding. Deficiences
5y ago
2
2
Solved
Tikihoofd
Future - upgradesI might have a silly question, but here goes:
I've found some lights I have left in my garage, and since I would like to upgrade my setup, I would like to know if these lights could function as grow lights.
The light=> Osram Highbay HQL LED E40 140W
Thanks!👽Week 7
Setup. Lighting
5y ago
3
3
Solved
sciurcavaliere
Extra lamp?Should I buy an extra lamp for the evening/early morning to extend the direct light time?Week 4
Setup. Lighting
5y ago
4
3