While they’re all PLA (55 degrees) time is another story.
The best way to tell is to weigh before putting in dryer, after few hours take out and weigh, repeat until it stops losing weight.
That’s a great way of telling but takes time. If print quality is lacking once open I’d dry for 8hrs to start. Test print quality and go from there. There’s a lot of good advice on here about drying. This thread is a good read:
