Pool DE filter grids typically last 1-3 years with proper maintenance, while DE powder needs replacement every 2-4 weeks. Signs of worn grids include shortened cleaning cycles and decreased water clarity.
Yes, you can leave your pool filter running continuously, and it's actually beneficial for water clarity and chemical distribution. However, running it 8-12 hours daily is usually sufficient for most pools while saving energy costs.
Pool filter sand should be replaced every 3-5 years or when you notice decreased filtration efficiency, channeling, or cloudy water that persists despite proper chemistry. Signs include poor water clarity and reduced filter run times.
Yes, you need to backwash your sand or DE filter when pressure rises 8-10 PSI above clean baseline, flow decreases noticeably, or water clarity diminishes. Cartridge filters cannot be backwashed.
Yes, a pool sand filter can be too big, causing poor water clarity due to insufficient backwash velocity and channeling. Proper sizing should match your pump's flow rate at 15-20 GPM per square foot of filter area.
