Soil temperature above 75 degrees?

[lampost]

I was reading in Jorge Cervantes grow bible that soil temperatures above 75 degrees can damage roots... is this true?

Seems like it'd be really easy to have soil temps above 75 degrees when you're working with an HPS shining right down at them. Also, if you've got bacterial reactions going on in there I'd imagine it could get quite a bit hotter! What do you guys think?

[Dutch Pimp]

Damn!...I have no idea, what my soil temps are running?...nobody ever brought that up before?

Now I have to figure out how to measure soil temps in a pot...damn! always something new to fuck with...trying to get it right...:thumbsup:

I think, your water temps would be a factor, too?...(the temp of the water going in...with or without nutes)..would effect soil temps?

[lampost]

Damn!...I have no idea, what my soil temps are running?...nobody ever brought that up before?

Now I have to figure out how to measure soil temps in a pot...damn! always something new to fuck with...trying to get it right...:thumbsup:

I think, your water temps would be a factor, too?...(the temp of the water going in...with or without nutes)..would effect soil temps?

LOL! Yeah I hear ya!

I'm already spending a lot of time fiddling with everything else. I had to kill one of my girls because of spider mite infestation and when I dumped her the soil was fucking hot! It was probably 85-90 degrees but looks like I had some great root growth in the week she was alive.