Pool care and repair guides from RMD Pool Service

Calcium hardness in pool water is often ignored until scale crusts the tile line or soft water etches plaster. North Texas municipal fill can arrive relatively hard, while soft well water or aggressive dilution can run low. Owners in Allen, Plano, McKinney, Frisco,...

How long after shocking pool can you swim? The honest answer is when free chlorine and pH are back in a safe range — not after an arbitrary clock on the internet. Product labels differ, and North Texas sun can drop residuals quickly. Homeowners in Allen, Plano,...

What is pool shock? It is a deliberate high dose of oxidizer used to destroy chloramines and knock down contaminants after heavy use, storms, or early algae. It is not a replacement for a steady daily residual. Owners in Allen, Plano, McKinney, Frisco, Murphy, Wylie,...

Salt water pool vs chlorine is less about “no chlorine” and more about how chlorine is made and managed. Salt systems generate chlorine from dissolved salt; traditional pools add chlorine as liquid, tablets, or shock. Owners in Allen, Plano, McKinney, Frisco, Murphy,...

Pool stabilizer (cyanuric acid, or CYA) is the sunscreen for outdoor chlorine. Without enough stabilizer, DFW sun burns off free chlorine in a few hours and the pool seems to drink shock. With too much stabilizer, test strips can look strong while algae still wins....

Learning how to raise alkalinity in pool water stops the pH roller coaster that stings eyes, stresses surfaces, and wastes chlorine. Total alkalinity is the buffer that holds pH steady when rain, swimmers, or acid additions try to shove it around. Homeowners in Allen,...

Liquid chlorine for pools — sodium hypochlorite — raises free chlorine quickly without adding cyanuric acid. That matters when tablets have already elevated stabilizer, or when you need a decisive shock after a Collin County storm. Homeowners across Allen, Plano,...

Above ground pool maintenance follows the same chemistry rules as inground care, with extra attention to liners, soft-sided structure, and smaller filter systems that clog faster. Owners across Allen, Plano, McKinney, Frisco, Murphy, Wylie, Sachse, Parker, Lucas,...

Knowing how to lower pH in pool water keeps scale, cloudy water, and reduced chlorine efficiency in check. High pH is common in North Texas when alkalinity runs high, aeration is strong, or fill water pushes the reading up. This guide covers safe acid use, why pH...