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jw14660

Does a hot air temperature matter if the water is chilled, in DWC hydroponics?

When growing cannabis in hydro (RDWC), does it matter if the air temperature surround the leaves/stem/buds is high (e.g. 22-35 degrees C), if the roots are bathed in chilled water (at 19-20 degrees) constantly?

I am starting a hydro attic grow soon, and my attic gets quite hot. However, I have a hydro water chiller that can keep the water at a constant temperature of my liking, and I have plenty of circulation fans. I can also, regularly mist the leaves of the plant if needed. However, is there any point at all in starting an attic grow if I can only control the temperature of the water reservoir?

 

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You will need to control air temperature without a doubt which can be done by extracting the stale air and replacing with fresh cooler air from below if possible or you’ll have to wait until the weather cools down before growing in the attic but cooler temps bring there own problems and you would need to warm the air. Either way the environment is the key to growing successfully. 

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On 08/07/2020 at 9:08 PM, jw14660 said:

, is there any point at all in starting an attic grow if I can only control the temperature of the water reservoir?

 

if you want my opinion, then - no.

Loft growing sucks, but if you have no other options, you should upgrade your extraction and run a fan controller to maintain proper temps (around 26)

There is no point doing a grow if you know its gonna be a constant fight against temperatures in the loft.

So either sort the extraction or wait till winter is my advice

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