P
phillyguy
- 186
- 63
First off, I hope you dont get in trouble for posting to much.
Just checked the ppfd with Photone app and it shows 162ppfd. Should it be higher than that? This is how big she is. I would say she has been out of the ground 2 weeks. Should I stay where I'm at or increase the light. It's running at 50% right now at 16 inches. Thoughts?
I've been doing 16/8. It is an auto flower.Ppfd # is good if accurate, 18/6 light schedule? Your light might be a little too close for seedlings though.
You can do 20/4 for autos, drives more vegetative growth, your on a clock when they sprout, so try to cram more hours in the day. You can add the hours when ever you like. It’ll get you a larger plant in the end homineI've been doing 16/8. It is an auto flower.
I'm running 100 watt light at 50%. It's a viparspectra.I have seedlings growing now and I have the light at 30 inches and 20% power of a 240-watt light for 48 watts of actual power.
I use ViparSpectra lights. They tend to have plenty of power.I'm running 100 watt light at 50%. It's a viparspectra.
Young plants are sensitive, so I like to have ample light distance for them. Some folks use CFL bulbs. If they stretch a lot, they're reaching for the light. If not and the color looks good, they should be fine.Raised light to 30". Was said it doesn't matter the par drops to 63. Really appreciate all your help.
It’ll be fine, don’t sweat the ppfd, I hang mine at 30in at 40% output in my veg room. I run all vipar In there.Raised light to 30". Was said it doesn't matter the par drops to 63. Really appreciate all your help.
You know what’s nuts? I’ve experimented with soil temps on seedlings. From sprout to around 2 weeks, my seedlings always grew fastest with the soil and air temps between 64-70F. Honestly, as long as the room/tent is 64-78F, and 50-70% RH, I never even worry. They all sprout and go into veg perfectly for the last 10 years. :).For Seedlings it smart to have a hygrometer/thermometer sitting in the soil - (77-81 Fahrenheit is safe )
Whenever "new growers" are asking these kind of questions(how much ppfd for seedlings), I try to steer them away from ppfd/par etc. and to give them safe temps at the soil level so they dont burn their seedlings, to me the easiest way to set lighting is just to make sure temps are nominal at seedling height. Meaning you could put your light 5 feet away at full power, or 30 inches away at 50% power, but what matters are the temps on the seedling, ultimately it will be heat/temps that shrivel a seedling. Most of Us who have grown for years forget what its like to be a new grower with seedlings... For experienced growers its simple...You know what’s nuts? I’ve experimented with soil temps on seedlings. From sprout to around 2 weeks, my seedlings always grew fastest with the soil and air temps between 64-70F. Honestly, as long as the room/tent is 64-78F, and 50-70% RH, I never even worry. They all sprout and go into veg perfectly for the last 10 years. :).
I believe early in a natural setting, seedlings expect soil and air temps to be on the cooler side.
Probably still getting over 300 PPFD………I've been experimenting seedling in a heated propagator with 150w led (close to seedling). Vs growing in my tent with a 350w at 50% (far from seedlings).
I've noticed that when I move a seedling to the tent, it tends to back away from the light, turning the cotyledons down and the first fan leaves up. The one seedling I left in the heated propagator still standing and looking more firm.
Does that mean the 350w are too strong for them and they are trying to back away from it? Or is it temperature related?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?