Water, Ice, Vapor

Normal sudoku rules apply.

Digits in cages do not repeat and must sum to the small clue, if given.

Digits in cages are either "water" (7,8,9), "ice" (4,5,6), or "vapor" (1,2,3). Cages may be a single type or a mix of types. Any row within a cage must be a single type and types must be ordered based on their density. Water is heaviest and must be below ice and vapor; ice is heavier than vapor.