Combining LED with CMH

sweettooth

Active Member
Currently have a 1.5m x 3m area with 2 LEDs (1 x 600w & 1 x 1030w). Winter is coming and the thought of using a 1500w heater is a bit frightening after previous bills. I'd rather get the heat from a light source. Thinking of adding 2 CMH bulbs in the middle, more specifically 2 x horizon reflectors which will spread the light out the entire width of the grow area.

Anyone doing this currently? any drawbacks? Maintaining enough extraction currently to keep co2 in the ambient range brings the temps down too much. Dont want to have to heat via expensive heater just to keep pulling in more colder air (I don't have a warmer inlet to use). CMH would also add more UV and create more resinous buds. I could place my filter at the bottom to pull all the warmer air down from the top to create a more even temperature between the top amd bottom of the tent.
 

Billy the Mountain

Well-Known Member
Using a light for a heater is a sound practice, a CMH is likely the brightest heater you can buy!

A watt is a watt (3.4 BTU) whether its from a toaster or a light, may as well enjoy some "free" light
 

PadawanWarrior

Well-Known Member
Currently have a 1.5m x 3m area with 2 LEDs (1 x 600w & 1 x 1030w). Winter is coming and the thought of using a 1500w heater is a bit frightening after previous bills. I'd rather get the heat from a light source. Thinking of adding 2 CMH bulbs in the middle, more specifically 2 x horizon reflectors which will spread the light out the entire width of the grow area.

Anyone doing this currently? any drawbacks? Maintaining enough extraction currently to keep co2 in the ambient range brings the temps down too much. Dont want to have to heat via expensive heater just to keep pulling in more colder air (I don't have a warmer inlet to use). CMH would also add more UV and create more resinous buds. I could place my filter at the bottom to pull all the warmer air down from the top to create a more even temperature between the top amd bottom of the tent.
That's actually my favorite light combo. CMH adds some UV to make the buds extra frosty.
 
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