This is a frequent debate that is never settled.
One side believes leaving tubes on is a fire hazard and uses up the tube faster and the heat also wears out the rest of the amp sooner.
The other side believes that turning your tube amp on and off is the most destructive thing you can do to it. Of course there are others with opinions all over the spectrum between these opposing poles.
My advice is to call up the manufacturer of your amp (even if you didn’t buy it new) and do whatever he advises.
One side believes leaving tubes on is a fire hazard and uses up the tube faster and the heat also wears out the rest of the amp sooner.
The other side believes that turning your tube amp on and off is the most destructive thing you can do to it. Of course there are others with opinions all over the spectrum between these opposing poles.
My advice is to call up the manufacturer of your amp (even if you didn’t buy it new) and do whatever he advises.