Experienced outdoor grower, first time indoors with autos.

  • Thread starter Barnyj74
  • Start date
  • Tagged users None
Barnyj74

Barnyj74

2
1
I have a 400 watt mh light with 4 plants. Today makes 3 weeks. I have a few leaves turning yellow on the ends and drying up. I haven't given them any nutes yet, I planted in happy frog potting mix, I'm just wondering if my light is too close maybe? I have it 12 inches above my plants. I'll share some pics if I can
 
freezeland2

freezeland2

1,080
163
You have a light meter? What’s the temperature at the leaves?

12” with a 400W MH sounds to close.
 
Barnyj74

Barnyj74

2
1
Screenshot 20210505 1552542
Screenshot 20210505 1553412
IMG 20210505 122433824 HDR

You have a light meter? What’s the temperature at the leaves?

12” with a 400W MH sounds to close.
I don't have a light meter, I'm just getting started with the indoor stuff. Some of the stuff I read online said no further than 12 inches away with the light. At that distance to me, it looks like 4 plants in 3 gal cloth pots, is too much for the area. I have a thermometer on the wall in my room, but not close to the plants. It stays a steady 70 degrees in the room. I boxed in a 4' x4' area and lined it with foil to maximize light exposure, but I have been worried the whole time about the heat. I do have a 6" forced ventilation system also. With a fan pointed right on the plants.
 
freezeland2

freezeland2

1,080
163
View attachment 1120919 View attachment 1120920 View attachment 1120921

I don't have a light meter, I'm just getting started with the indoor stuff. Some of the stuff I read online said no further than 12 inches away with the light. At that distance to me, it looks like 4 plants in 3 gal cloth pots, is too much for the area. I have a thermometer on the wall in my room, but not close to the plants. It stays a steady 70 degrees in the room. I boxed in a 4' x4' area and lined it with foil to maximize light exposure, but I have been worried the whole time about the heat. I do have a 6" forced ventilation system also. With a fan pointed right on the plants.
You can download a light meter app to your smartphone. It will give you a good idea where you are light intensity wise.

You want the fan oscillating across the bottom of the canopy. Not a constant directed air flow right in to the plants. Think wind burn with it pointed directly at plants on a constant basis.
 

Similar threads

einthecorgi
Replies
6
Views
163
Mugwort
Mugwort
BMTGrowstrees
Replies
10
Views
316
GreenMtnGuru
GreenMtnGuru
ELGenerali
Replies
18
Views
315
ComfortablyNumb
ComfortablyNumb
frank42burns
Replies
2
Views
100
Frankster
Frankster
HWH
Replies
53
Views
1K
HWH
HWH
Top Bottom