Difference Between Sand & Cartridge Filter for an Inground Pool

Difference Between Sand & Cartridge Filter for an Inground Pool

🧼 Pool Filter Options: Sand vs. Cartridge

When it comes to keeping your pool water clear and clean, your filter plays a critical role. At Premier Pool & Spa, we carry and support both sand filters and cartridge filters, each with their own unique advantages.

Let’s break down how each system works, and what you need to know to keep them running at peak performance.


πŸ–οΈ Sand Filters

Sand filters are a popular and reliable choice for many residential in-ground pools. They work by pushing pool water through a bed of sand, where dirt and debris are trapped before the clean water returns to your pool.

πŸ§ͺ How It Works:

  • Water flows through a tank filled with specially graded sand

  • Dirt and debris are trapped in the sand bed

  • Clean water is returned to your pool

  • To clean the filter, you β€œbackwash” β€” reversing water flow to flush out the debris

πŸ”„ Maintenance:

  • Low maintenance overall

  • Backwash as needed (typically when the pressure gauge rises 8–10 psi above normal)

  • Replace sand every 2–4 years depending on usage


πŸ’Ž Upgrade Option: Ruby Red Sand Media

Looking for better water clarity and longer cycles between backwashes? Ruby Red Sand is a premium alternative to traditional pool filter sand.

🌟 Key Benefits:

  • D.E.-like clarity: Filters down to 3–5 microns (vs. 20–40 microns for regular sand)

  • Traps ammonia, amines, and heavy metals

  • Requires fewer backwashes (saves water)

  • Longer filtration cycles

  • Massive surface area = more dirt captured

πŸ’‘ We recommend Ruby Red Sand as a high-efficiency upgrade to standard sand for customers who want crystal-clear water with less maintenance.


πŸ§ƒ Cartridge Filters

Cartridge filters use pleated synthetic fabric wrapped around a central core to trap debris as water flows through the filter.

πŸ§ͺ How It Works:

  • Water passes through the pleated fabric

  • Debris is captured within the filter cartridge

  • Clean water flows back into your pool

This system is especially common in spas and smaller pools, but it’s also used in pools where energy efficiency and finer filtration are top priorities.

πŸ”„ Maintenance:

  • No backwashing required β€” water-efficient!

  • Remove and manually clean the cartridge when pressure rises or flow decreases

  • Keep an extra set on hand to rotate while cleaning

  • Cartridges typically last 3–4 cleanings before needing replacement (efficiency drops with each cleaning)

🧽 Tip: Use a hose with a fan nozzle and a filter cleaning solution to extend cartridge life and improve cleaning results.


πŸ†š Which Filter Is Right for You?

Feature Sand Filter Cartridge Filter
Micron Filtration 20–40 microns (3–5 with Ruby Red) ~10–15 microns
Maintenance Easy (backwashing) Moderate (manual cleaning)
Water Efficiency Uses water when backwashing Saves water (no backwashing)
Replacement Frequency Sand: every 2–4 years Cartridge: every 1–2 seasons
Clarity Level Good (Excellent w/ Ruby Red) Excellent

Still not sure what’s best for your pool setup?
πŸ“ Visit our retail store or give us a call. Our pool pros are happy to help you choose the right filtration system for your needs and usage.


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πŸ“ Visit Us in Chanhassen

At Premier Pool & Spa, we're here to make pool ownership easy, efficient, and crystal-clear.