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
qu'elle est le plus important à prendre en compte le nombre de lux ou le PPFD/DLI
dataTwiiixstarted grow question 4y ago
lux, ppfd et dli. en faisant j'ai réalisé qu'il était dur d'avoir un ppfd entre 500 et 1000 pour la phase plantule sans dépasser les fameux 7000lux on approchent plutôt les 25000lux si on veux atteindre le ppfd souhaitable pour cette phase. comment faite vous?
Solved
Setup. Lighting
likes
MrStinkyanswered grow question 4y ago
For a tiny seedling like that you only really need like 200-300ppfd so just lift your light higher.
With LED lux / ppfd / intensity works a bit differently.
Also, glass jars can act like a magnifying glass and burn your seedlings when used as domes, try plastic instead with a hole in it for air flow to keep them fresh :)
Similar Grow Questions
Solved
greenhousegrowgirl
Should I substitute sunlight with a grow lamp on cloudy days?It’s overcast here today and I’m wondering if I should turn my grow lights on to compensate for the lack of direct sunlight. If so, should I drop the intensity to compensate for the additional natural light? Can you overdo the amount of light (not heat) a plant gets?
Week 3
Setup. Lighting
4y ago
3
1
Solved
Sup3rNov4
LED Wattage confusion!?!?!?!?!In a few days, I will be putting these into a 4ftx4ft grow tent. Im a little concerned as my Lights say 1000w but on further research, it says actual wattage 140. does this mean I only have 280w and is that going to be enough?Week 3
Setup. Lighting
5y ago
2
2
Solved
Growladyeastmidlands
What light should I use pleaseI have had to scrap all my plants and started again with new seeds autos and I plan to do 10 plants in the tent I have a 600w hps light and also leds 600w and mars hydro 1600w led but with my last grow hermie on me and I don't know why I want to know what light to use nowSetup. Lighting
3y ago
1
3
Solved
1smoke2joints
Lightning questionHey, Growers! This week I had to open together the two boxes, so now all the plants have both kind of lights. Do you think, it can have a negative effect on them, or maybe it's good at least for the 140cm height White Widow,because the bottom parts get some more light from there?
Week 8
Setup. Lighting
5y ago
1
1
Solved
chrisg79
LightingAny help on my light Question in comment would be really appreciated. TIASetup. Lighting
4y ago
3
2
Solved
Filippo
Low cost lights?
Che consumino poco (sotto i 10pw se possibile)!Setup. Lighting
5y ago
2
Solved
NonameGrowDude
Led light for a small seedling / early veg space 80x40x80cmThe plants to use the space to start seeds and veg them little bit until I transplant to final pot in a flower tent.
I don't have much height so is looking for a light that the plants can be close to.
Any suggestion for led or should I just go with t5?Setup. Lighting
2y ago
2
Solved
Nobel
Light and waterThank you guys! for watering, I don't know how she can react giving her more than 250ml. I can try but I don't want to drown her. For the light, unfortunately direct sun light arrives from 11.30/12 am to 7pm. Before it is covered by other buildings behind my terrace.Week 2
Setup. Lighting
5y ago
4
Solved
darbyog
Distance from pot to light during germinationWorried about our light power and distance to the pots, should we be running it at full power with the light higher in the tent or vice versa? Also very unsure about watering amounts in these early stages and is it okay for water droplets to be sitting on the growth? TIA
5y ago
4
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