Am i gettting to hot???

so I turned on my 400w MH last night and slowly watched the room temp raise to 85 degree's ... I'm thinking this is too hot for my girls... I'm thinking that this is during the winter or at least during a cold month next month the temps are going to rise dramatically... should I consider CO2 ?

some strains actually prefer that temp, anyone that I've used 85 is usually the tipping point I'll start to see heat stress.. I would start trying to think of a better setup, you either need more inlet/outlet fans for ventilation, cool tube your light, or a bigger area.. I dont believe CO2 will help you out too much

Doc Holliday* said:

so I turned on my 400w MH last night and slowly watched the room temp raise to 85 degree's ... I'm thinking this is too hot for my girls... I'm thinking that this is during the winter or at least during a cold month next month the temps are going to rise dramatically... should I consider CO2 ?

Click to expand...

you need cooltube.

John Jacob said:

some strains actually prefer that temp, anyone that I've used 85 is usually the tipping point I'll start to see heat stress.. I would start trying to think of a better setup, you either need more inlet/outlet fans for ventilation, cool tube your light, or a bigger area.. I dont believe CO2 will help you out too much

Click to expand...

Im currently growing Master OG, SilverBack OG, and Super Grape.

John Jacob said:

some strains actually prefer that temp, anyone that I've used 85 is usually the tipping point I'll start to see heat stress.. I would start trying to think of a better setup, you either need more inlet/outlet fans for ventilation, cool tube your light, or a bigger area.. I dont believe CO2 will help you out too much

Click to expand...

actually co2 was first brought into growing indoors to deal with heat issues. co2 causes the stoma (the little opening on the leaf that absorbs light) to stay open. high temps cause the stoma to close. A closed stoma cant uptake light and photosynthesis cannot take place with out light being absorbed threw the stomas...

anywho enuff history and biology... 85 is way high i get nervous /w anything arround and above 80. co2 is pricey and wont solve ur issue very well. look into air cooling your 400, better exaust, and getting an a/c in the room. if there isnt a window near by there are portable a/c units...pry wana do all 3..itz gana be a hot ass summer.

fir3dragon said:

you need cooltube.

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Ya.. I think your right... Ill get one today... whats Ideal temps inside... Ill set it up on a thermostat.

actually co2 would be perfect. 85 is what you need to run co2. you would have to have a closed enviro, and would be helpful to run an air cooled hood.

good luck, happy growing

$waGgEr said:

actually co2 was first brought into growing indoors to deal with heat issues. co2 causes the stoma (the little opening on the leaf that absorbs light) to stay open. high temps cause the stoma to close. A closed stoma cant uptake light and photosynthesis cannot take place with out light being absorbed threw the stomas...

anywho enuff history and biology... 85 is way high i get nervous /w anything arround and above 80. co2 is pricey and wont solve ur issue very well. look into air cooling your 400, better exaust, and getting an a/c in the room. if there isnt a window near by there are portable a/c units.

Click to expand...

I have a wall that goes directly into my garage... so I'm thinking about an a/c unit that has the hose vents also adding a cool tube since Im thinking about bumping up the juice since I just added a couple more girls.. thanks for the advice ... any recommendations on ideal temp?

75 - 80 lights on...lights off above 55-60

vilify said:

actually co2 would be perfect. 85 is what you need to run co2. you would have to have a closed enviro, and would be helpful to run an air cooled hood.

good luck, happy growing

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... tru.. but co2 is an unnessessary pain in the ass with a small grow

Doc Holliday* said:

Ya.. I think your right... Ill get one today... whats Ideal temps inside... Ill set it up on a thermostat.

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i got a 400w with a cooltube connected with a 4 inch carbon filter and fan and its 81 in there at the hottest so far.

cool tube is the way the to go, I just constructed a cooltube for one of my 400w to see the difference.. I used a bake-a-round haha old school baking equipment but does awsome with a 400w hps.. My tops are about 5-6inches from the light they can pretty much touch the glass but I get to paranoid they'll burn

never goes above 75 in my flower room

$waGgEr said:

75 - 80 lights on...lights off above 55-60

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thanks Ill be setting thermo today.

You'd be way better off with a sealed/vented reflector hood over a cool tube.

Rj41 said:

You'd be way better off with a sealed/vented hood over a cool tube.

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care to explain?

i read on here from someone that a vented hood takes more fan power to cool then a cooltube.