Re: KM hookah care?
Clean after every use with lemon juice, hot water, and baking soda if you like. I smoke mine way too often so I clean mine about every 2 or 3 bowls.
EDIT: And make sure your base is at room temperature before letting warm water in there.
Rig: 32" Red & Black KM Carnival/Vortex Bowl/Razan Raja Washable Hose/Exotica Coals
Moassel: Nak Earl Grey/Nak Cardamom/Nak Orange