Temperature control for just started seedlings

Illegal Smile

Well-Known Member
I have my grow area pretty well dialed in for temp control, at least I did. I just started a new grow and set germinated seeds in the hydro system. But overnight the small heater's thermostat seem to have taken a poop because it was allowing temp to rise to 86 before shutting off, then allowing it to fall to 68 before coming on. I'm testing a new heater now, but what I really want to know is whether those two extremes might have done any harm to the newly hatched babies.
 
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