distance from tip of plant to hps bulb??

mp377t

mp377t

Well-Known Member
How much space should I give the tips of the plants and the 150 watt hps I have, I read somewhere you want atleast a foot but someone else told me recently 30 cm but that seems a little close.
 
G

greenthumb42O

Member
mp377t said:
How much space should I give the tips of the plants and the 150 watt hps I have, I read somewhere you want atleast a foot but someone else told me recently 30 cm but that seems a little close.
Click to expand...
One foot = 30.48 cm... Just hang a thermometer near the canopy and watch your temps. If that's not an option put your hand near the canopy - if it feels hot, move your light higher. Ventilation is always a must.
 
bongmaster

bongmaster

Active Member
ya i would say about a foot or so i run a 400w hps and i keep the light about 18inc away from the tops of the plants if a foot seems still a little close then try 14 or 15 inc you should be fine.
 
2

2stroke

Well-Known Member
get a fan blowing on it if ya cant get a cooltube on the go, 12 to 4 inches are the mins and max for a 150 with 4 inch really neededing a cooltube or somthing. Start at 12 and move them in.

from a chart i have for safe and good grow min/max for a 150

4" - 45k Foot candels
5" - 29k
6" - 20K
7" - 14k
8" - 11k
9" - 9k
10" - 7k
11" - 6k
12" - 5K
13" + to weak
 
mp377t

mp377t

Well-Known Member
thanks for your help everyone, will be moving my light up just a few inches. Here is a picture of her in my closet, which is the hard part, the only ventilation it gets is when im able to open the door which is most always, and i do have a fan in there constantly blowing air around. the plant looks fairly healthy from what i can see, im just waiting patiently for the outcome cant wait to try some of my own.
 

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