Regarding water temperature in a DWC, I know that the optimum water temp is around 65 degrees or so.
Assuming that Hydroguard is being used in the reservoir to prevent root rot, at what temperature does water temperature really become a problem? In other words, when do you start seeing problems with your plants and what kind of problems would you be looking for?
Checking my last grow journal, my ambient air temps averaged in the mid-70's during the day and it would drop to the upper-60's at night. Without using a chiller of some type in my reservoir, I'm expecting the water temps to mirror that. I'm using LED grow lights so they are not throwing off much heat. So I'm wondering if I'll be able to do a complete DWC grow knowing that my water temps will be a bit on the high side.