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 Literberry
Registered: 02/08/09
Posts: 14
Last seen: 9 years, 11 months
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 HPS and MH heat 
#460044 - 08/14/10 01:01 PM (14 years, 3 months ago) |
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I have a small grow closet that is about 2'x4'x7'. When I turn on my 400w
HPS, it heats up to damn near 100 degrees. On the other hand, when I
turn on my 400W MH it temp stays in the mid 80s. The MH is a bit closer
to the exhaust, and both ballasts are in the same area. Anyone know what
the cause might be? Both are mounted in plain reflectors so thats not it. I don't use both at the same time, but would like to alternate.
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Literberry
Registered: 02/08/09
Posts: 14
Last seen: 9 years, 11 months
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Re: HPS and MH heat [Re: Literberry]
#460048 - 08/14/10 01:04 PM (14 years, 3 months ago) |
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The exhaust fan is mounted in the ceiling towards the top left just out
of frame in the pic.It's just an in-line booster duct fan 4". I plan
on upgrading soon, just need some advice until then.
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 juke adro
I hate fat vaginas
Registered: 07/01/08
Posts: 2,227
Loc: Québec
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Re: HPS and MH heat [Re: Literberry]
#460052 - 08/14/10 01:09 PM (14 years, 3 months ago) |
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You may need a inlet and a outlet fan instead of just one outlet, flood the air out and it will cool.
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I eat animals and most things that live in the sea, I'm not green but I smoke it and I litter to keep cunts like you in a job so fuck off.
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Literberry
Registered: 02/08/09
Posts: 14
Last seen: 9 years, 11 months
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Re: HPS and MH heat [Re: Literberry]
#460060 - 08/14/10 01:13 PM (14 years, 3 months ago) |
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Yeah, but what I dont get is the drastic temperature difference between the two 400w lights. I understand that a few degrees would be normal, but it's almost 20 degrees hotter with the hps.
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juke adro
I hate fat vaginas
Registered: 07/01/08
Posts: 2,227
Loc: Québec
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Re: HPS and MH heat [Re: Literberry]
#460064 - 08/14/10 01:16 PM (14 years, 3 months ago) |
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HPS run hotter it's how it is, get cool tubes 
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I eat animals and most things that live in the sea, I'm not green but I smoke it and I litter to keep cunts like you in a job so fuck off.
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Literberry
Registered: 02/08/09
Posts: 14
Last seen: 9 years, 11 months
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Re: HPS and MH heat [Re: Literberry]
#460073 - 08/14/10 01:29 PM (14 years, 3 months ago) |
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Ok, thats what I needed to know. Thx you sir! Cooltubes someday.... someday.
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kln
Stranger
Registered: 12/08/09
Posts: 134
Last seen: 8 years, 6 months
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Re: HPS and MH heat [Re: Literberry]
#470710 - 09/01/10 06:21 AM (14 years, 2 months ago) |
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for your situation cool tubes are the way to go for sure, but you will need a nice fan for that if you want to run both at same time
What do you use for intake?
Some oscillating fans there would take a few degrees also.
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