At the moment there are discussions over the water temperature at rdwc/dwc systems.
In the book I bought to update my knowledge, it says you can get up to 30°C.
#Grow0018 was without a chiller.
The book is from 1997, so science goes on, and now they talk about 18-20°C.
In all my grows so far, I didn't reach the 30°C mark and had no root rot.
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