70 watt hps heat

chupacabra4real · Apr 6, 2010

Will the heat from a 70 w hps be difficult to control if growing in a 40 cm x 40 cm x 120 cm darkroom?(No ,I don-t have an extractor ,I use a 12 inch pc cooler at the upper exhaust and it blows air in the same room cause i don t have an exhaust in the wall to blow air to the outside).+rep

cylee89 · Apr 6, 2010

I've seen very successful 70w hps grow in computer cases which are almost the same dimensions as your grow area (cubic feet wise). Heat control would not be a big issue in my opinion

:leaf:

donkeyote · Apr 6, 2010

if you wire it up so the ballast is external from your growspace then its fine. I gotta couple 70 watters running and they put out less heat than the CFL's i originally had in there.

sm0keyrich510 · Apr 6, 2010

well i never used a 70w hps but the heat should be minimal (as its wattage is low) heat control shouldnt be too hard. i'd guess an extra fan at most... heat isnt a problem until you move up to 250-400 and beyond...like 70w or 150w wont give out too much heat.

infact i have a digital 600w hps system and compared to the 10 cfls i was using i really lucked out. the ballast on mine doesnt have a fan blowing on it but its only slightly warm to the touch (very slightly...i've felt laptops run hotter). and the bulb doesnt get too hot as long as you have a fan blowing on it. it doesnt get much hotter than with the cfls believe it or not...maybe 5 degrees difference at mos.t

so you should be more than fine with a 70w hps setup.

chupacabra4real · Apr 6, 2010

yeah that was my maiin priority.....hps inside.....ballast outside.......at the moment I have 5 cfl of 30 watts each in 2700 k surrounding the plant......heat is maintained around 28 -30 degrees Celsius.....luckily the tent is in my bedroom so it gets plenty of Co2...........is it wiser to keep them Cfl's (5 x 30 w = 150 w) ...or use a 70 watt hps in 1950 k for better penetration?(6600 lumens it has).+rep

chupacabra4real · Apr 6, 2010

sm0keyrich510 said:
well i never used a 70w hps but the heat should be minimal (as its wattage is low) heat control shouldnt be too hard. i'd guess an extra fan at most... heat isnt a problem until you move up to 250-400 and beyond...like 70w or 150w wont give out too much heat.

infact i have a digital 600w hps system and compared to the 10 cfls i was using i really lucked out. the ballast on mine doesnt have a fan blowing on it but its only slightly warm to the touch (very slightly...i've felt laptops run hotter). and the bulb doesnt get too hot as long as you have a fan blowing on it. it doesnt get much hotter than with the cfls believe it or not...maybe 5 degrees difference at mos.t

so you should be more than fine with a 70w hps setup.

Should I dare for an 100 watter then?my concern is the one I found is in the 1950 k.......

sm0keyrich510 · Apr 6, 2010

chupacabra4real said:
Should I dare for an 100 watter then?my concern is the one I found is in the 1950 k.......

never seen one with that kelvin rating.

you'd be best to get it in the 2700K area (give or take a few hundred either way).

just keep the ballast out from the immediate grow space. i have a digital so i noticed they dont run as hot but i still keep mine as far from the light as possible.

the magnetic ones do run hotter so i would definitely put it outside the grow space (or out from where the plants/light area.

go for the 100...add maybe one more small fan to compensate for the extra heat. have the fan blow DIRECTLY onto the bulb/inside of the reflector at ALL times. this will help insure the temps stay down. at least it works for me.

70 watt hps heat

chupacabra4real

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cylee89

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donkeyote

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sm0keyrich510

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chupacabra4real

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chupacabra4real

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sm0keyrich510

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