I turn mine at 100% 30 inches distance and I have 30k lux (thats what my phone app says)
Grow room to cold
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dbz
Well-Known Member
You always want some air movement on the leaves. Not direct hard air movement but they should be rustling. This helps stem strength along with helping to prevent mold issues especially with high humidity.
As far as temp goes with LED, stalled growth can occur with lower Temps especially. Ime plants grow best under LED when the temp is a bit higher 76 to even 80 degrees Fahrenheit. The key is to keep in a good vpd around .9 to 1 Kpa. So your humidity would need to raise with higher Temps as well.
None of this is necessary but it does help. HID lights lower Temps because of difference in IR and LST.
With seedlings be careful not to overwater either. They require very little water and in a bigger pot very much just right around the seedling. A shot glass of water or so every 2 days
amneziaHaze
Well-Known Member
watch out cheaper phones show less than quality phones. i guess sensor is bad or something....
i have a question whats the temperature under the lamp when its on?temp of tops?
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i think its about right
i read this journal where they test te spider farmer and seems similar lux
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coreywebster
Well-Known Member
For now it is.
Once they are bigger and transpiring a lot then you might have to have it on periodically.
You should test your light and temps at full power so you know where your at.
i get about about 2 c more , i turn my lights a 100% and i have 24 \25 c . will see if i dont kill them
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i test at full power and i have 24 c temperature with a fan at setting 1
will see if they start growing now
VincenzioVonHook
Well-Known Member
They should. These were grown over winter, and at the time of the picture had never seen anything over 25c. Ambients were 10-20c in the room, and in the tent it was 14-24c on average. I just couldn't be bothered running heaters. I'm in uni accom, and already trying to explain my electricity usage lol. These were at 5 or 6 weeks from germ. They were popped in late June which is dead winter here. Yours were a bit colder to start, but 24c should work from here on. I didnt use the exhaust much until I hit flower due to heat issues. It was nice and dry so I didn't run into any humidity issues.
Nice , I think I overwater the pots too. I soaked the pot , still wet for a week
I have two Androids of the same model but they give different readings!
I use "PPF Meter" app. It can display the model number of the light sensor and my two phone's have different sensors.
Put blankets etc. on tent, a few more degrees will help.
It all depends on wattage. I use a crock-pot on an Inkbird temp controller, it was free.
