I have done a bit of research, and now understand that that means a 8AWG bare or green ground wire needs to go to the heater and pump (although the pump installation instructions didn't say anything about this) and then to my panel.
OK I am gonna do this, but I was wondering how big a deal is this, in the meantime? Should I not use the hot tub due to danger? Both devices are grounded, and plugged into functional GFCI outlets. I (sort of) understand that the bonding ensures equal something-or-other ( no voltage differences) between each of the metal componets near the tub. thx