Calcium nodules in pools look like little calcium volcanos or blisters that ooze out of pool walls and floors. In this article we cover two opposing viewpoints about what causes calcium nodules, and lay out the facts that everyone agrees on. Then we'll discuss how to prevent and fix calcium nodules.
national plasterers council
Many people think the Orenda Startup™ is basically a "Calcium Startup". But that's incorrect, and we want to set the record straight. The Orenda Startup™ is an LSI startup.
There are three distinct forms of calcium carbonate that we commonly find in swimming pools. They are carbonate scale, calcium crystals [calcite], and the topic of today’s article, calcium dust.
I have never plastered a pool in my life. In fact, until this week, I had never even seen pool plaster being applied. To be honest, I did not even know the difference between plaster, cement, gunite, concrete, shotcrete, or any other type of -crete. Because of this utter lack of knowledge and experience, I thoroughly enjoyed my time at this year's National Plasterers Council (NPC) annual conference in New Orleans.
Pool builders, plaster applicators, and service techs know that a pool startup can be a real pain. Plaster dust is just the tip of the iceberg. For residential pools especially, most pools have water filling them within hours of finishing the plaster. That means the tap water and its chemistry is immensely important in the curing process (hydration) of new pool plaster.