Apr 30, 2013 - Marcite is a very common soft plaster finish used on in-ground pools. It starts off white, . It's helpful if you know what type of stain you may have. Mar 16, 2018 - The first step to getting rid of those eyesore spots is to diagnose the stain type. Swimming pool stains can be caused by: 1. Metals or Minerals in . To address this problem, the source of pool stains must be identified, and the . to determine exactly what kinds and levels of metals are plaguing your pool. Jul 18, 2014 - Plaster Pools - stain more easily than vinyl, the layer of plaster is porous to many stains, and rough or etched surfaces accentuate a stain . It only takes the copper from the size of a penny to be oxidized in your pool and cause major stains. The types of metals that can sneak in your pool includes rust, . May 27, 2014 - Common Occurence of Brown Stains in a Swimming Pool Swimming pool stains have many sources. Algae, metals, calcium buildup, and just . Aug 9, 2016 - Pool plaster interior finish problems: Typical causes of the most common . plaster's marcite material (marble dust) to remove surface stains and some . For deep stains and extensive etching, as well as other kinds of serious . Upgrades from marcite to quartz and pebble swimming pool interior finishes provide durability . Posted by Blue Haven Pools & Spas on Jan 8, 2018 9:00:00 AM . Let's take a look at what each kind of finish brings to the table. That way, you . Pool Stain Treat has the strength to remove stains from any kind of Swimming Pool Paint and color (marcite) are unique and be sure to follow the instructions.