What actually works to clean jacuzzi jets in bathtub?

fill it a couple of inches over the jets with hot water, add half a cup of dishwasher powder and a cup of bleach (or a proper jetted-tub cleaner - not dish soap, that foams out over the floor), run the jets for 15 minutes, drain, refill with cold clean water, run another 10 to rinse. the first run is usually disgusting, that's the bit the videos cut. low pressure won't matter for this. monthly after that and it stays clean.