help with fans

[DrFever]

Light Requirements of "High Energy" Plants
1000 - 5000 lux Min. necessary for life
10000 - 15000 lux Min. necessary for consistent but sparse growth
20000 - 25000 lux Min. necessary for robust growth
25000 - 30000 lux Max. Efficiency for Sub Tropical varieties
25000 - 50000 lux Max. Efficiency for Equatorial varieties
Plants need 25000-50000 lux too grow fast.
90000 lux Max. Sunlight Intensity on Earth's surface This is too much light, it is not good for the plant.
Plants subject to intensities at this level or greater are at risk of "solarization," whereby photosynthesis is retarded. This can happen at noon on a clear Tropical summer day, especially at high altitudes.
140000 lux Sunlight above atmosphere (Solar Constant)

 

[highharry]

thanks for the light requirements DrFever

the lamps have separate ballast, but would have to buy reflector
been looking at the air cooled models on amazon
comparing pictures on the net these are proper hps lamps
have the threaded socket, look exactly the same, same specs
one model is more bulbous around the middle, the other long and straight

hh

 

[highharry]

so dumb question time...

if you have an air-cooled hood, do you need to run a second fan to remove the air from the box just for the humidity? because where i live has pretty high humidity...
if i run a simple (uncooled) reflector, will 120-250 cfm fan cover the heat removal?

thanks,hh

 

[LEFTHAND]

I would go 250-300cfm range. You can always dial it down but have the option of cranking it up too.
You can run 2 fans if you like.
Or you can suck out of the box through the hood n out a filter if there is no room for a filter on the box.

I use to run 1 fan. Now I've hooked my 6" ostenberg for my 2 600w and me vortex is controlling heat in box
I am likening this more Cuz I'm finding a nice temp control range.
But this is also in my situation.

LH

 

[highharry]

thanks for all the great info folks.