so i just started my seedlings under cfls. they are big bang by greenhouse. i have a 400w hps with a metal halide conversion bulb. i dont want to fry the lil babies so im waiting till they get a little stronger until i turn on the 400 watter. this is my first grow with a hps and i am wondering if a fan blowing on the light and one blowing on the ballast will be enough to keep the heat to a point where the plants can survive. Also how high above the tops should the light be. any advice would be appreciated
hps heat issues
- Thread starter dontknow
- Start date
rumpleforskin
Active Member
works for me someone gave me the link so here ya go~http://www.icmag.com/gallery/data/500/18634HPS-Light-Chart.jpg
HoLE
Well-Known Member
first off ,where are you growin,,closet book shelf,,pc ,,depends on the space you have em in,,as too what you need,,I grow in a small closet,,temps can easily reach over a 100 in the summer,,unless you have air flow in,,and out,,and air movement inside,,I started with a 400 watt hps,,had high temps,,learned about ventilation here,,upgraded to a 600 watt,,and temps are lower,,so what's up??
Keep on Growin
HoLE
Keep on Growin
HoLE
FilthyFletch
Mr I Can Do That For Half
Thats a tight aare and if you cant modify it heat wil be an issue.A portable ac unit can be bought but that would take most the space in there and cost about $40 at the cheap end
jimmyspaz
Well-Known Member
Don't Know;
How big is your grow space? I am using one 400 watt in an area 5 ft. sq.(25 sq.ft.) in acorner of my laundry room for mothers and veg and have had no problems with excess heat. I do have a window in the room open about 3 in. for ventilation in the warm weather, but I just close it when the outside temperatures drop. this does not seem to aversely affect growth. Good luck and keep on growing.
How big is your grow space? I am using one 400 watt in an area 5 ft. sq.(25 sq.ft.) in acorner of my laundry room for mothers and veg and have had no problems with excess heat. I do have a window in the room open about 3 in. for ventilation in the warm weather, but I just close it when the outside temperatures drop. this does not seem to aversely affect growth. Good luck and keep on growing.