I recommend a pressure cooker for making stock rather than a slow cooker. Superior results in a fraction of the time and energy. I use a stovetop pressure cooke

I recommend a pressure cooker for making stock rather than a slow cooker. Superior results in a fraction of the time and energy. I use a stovetop pressure cooker, which tend to cook at higher pressure than Instapot style cookers, but the Instapot should be about equivalent to the slow cooker in terms of hands-on attention.