Pool Clarifier by Surface Type: Plaster, Vinyl, Fiberglass, and Tile

Quick Answer: Clarifier's function — clumping fine particles for your filter — works the same chemically regardless of pool surface, but surface type affects how cloudiness originates: plaster pools can shed fine calcium/plaster dust contributing to haze, while vinyl and fiberglass pools are less prone to that specific source and more often cloudy from chemistry imbalance or filtration gaps.

For plaster pools with recurring fine haze even when chemistry checks out, some of that cloudiness may be plaster dust rather than organic particulate — clarifier still helps, but addressing surface condition (or a plaster pool's normal "dusting" in its first season) is a separate consideration. For vinyl and fiberglass pools, cloudiness is more reliably traced to the standard causes — see [Why Is My Pool Cloudy? A Troubleshooting Flowchart] for the general diagnostic order regardless of surface.

Related Reading: Green, Black & Mustard Algae: Surface Risk · Pool Clarifier vs Algaecide: Which One Do You Actually Need? · What Is a Pool Filter and Which Type Do I Need?