03/01/2026
Swimming Pool Filter Sand :
Why a change ?
The sand lose its effectiveness due to the following factors:
Weathering and Smoothing: New filter sand has sharp, jagged edges that trap fine debris. Over a time of water rushing over them, these edges gradually wear smooth, making it harder for the grains to "grab" small particles.
Calcification and Clumping: High calcium levels or body oils can cause sand grains to stick together, forming hard, "brick-like" clumps or "mudballs".
Channeling: When sand clumps or hardens, water creates "channels" or paths of least resistance through the gaps. Instead of being filtered, the water simply flows through these holes and returns to the pool still dirty.
Debris Saturation: Over time, some contaminants (like oils and minerals) can become permanently attached to the sand, making regular backwashing less effective.
Signs You Actually Need a Change
Look for these specific indicators that your sand has reached the end of its life:
Persistent Cloudy Water: Even when chemicals are perfectly balanced.
Frequent Backwashing: You find yourself needing to backwash every few days instead of every few weeks.
Pressure Issues: The pressure gauge stays high even after a thorough backwash.
Clumpy Texture: If you open the filter and the sand feels oily, slimy, or is stuck in hard chunks.
Contact Kevin Morgan at Crystal Pools
082 461 6305
082 7433 646
