Pool filters Sand or cartridge: which should you choose?

Clean water is the whole point of owning a swimming pool for home use, and the filter is the part that does the quiet daily work. Two types dominate above-ground pools in India: sand filter pumps and cartridge filters. Here is how to pick the right one for your pool, your water and your routine.

How a pool filter works

A pump pulls water from the pool, pushes it through the filter, and sends clean water back. Dirt, leaves, hair, dust and fine particles get trapped on the way. Chlorine then handles the germs, but it works much better when the water is already clear.

In Indian summers your pool collects a lot more than leaves. Fine dust from dry winds, pollen, sunscreen, body oils and insects all end up in the water. A filter that suits your pool size and usage keeps all of this under control without constant effort.

The two filter types do the same job in different ways. A cartridge filter uses a pleated paper-like element. A sand filter uses a tank of special sand that traps dirt as water flows through it.

Cartridge filters: pros and cons

Most small and mid-size Bestway and Intex pools come with a cartridge filter pump in the box. It is simple, quiet and easy to understand. You take out the cartridge, rinse it with a garden hose, and put it back.

Where cartridge filters shine

• Easy to use. No backwashing, no valves, no multi-port settings.
• Low running cost and gentle on the pump.
• Good at catching fine dust for smaller family pools.
• Works well for pools you drain and refill every few weeks.

Where they struggle

• The cartridge clogs faster in dusty cities and in heavy use, so you rinse it often.
• Cartridges wear out. Keep a spare or two, especially since parts can take time to source.
• Not ideal for large pools with many swimmers.

Sand filters: pros and cons

A sand filter pump is a bigger unit with a tank, a valve and a pump. Water flows down through the sand bed, and dirt gets caught between the grains. When the pressure gauge rises, you backwash, which means reversing the flow to flush the dirt out through a waste pipe.

Where sand filters shine

• Better for bigger pools and frequent use, such as a farmhouse pool or a homestay.
• No cartridges to buy again and again. The sand typically lasts for years before it needs changing.
• Handles heavy loads of dust and debris with less fuss.
• Cleaner water over time when run for enough hours.

Where they struggle

• You need to learn backwashing and the valve positions. It takes ten minutes to learn.
• Backwash water has to go somewhere. Plan a drain or a garden outlet.
• The unit is heavier and needs a firm, level spot.
• Costs more up front than a basic cartridge pump.

Side by side comparison

Exact replacement intervals and costs vary with your water, usage and brand, so treat the table as a general guide rather than a promise.

Which one suits your pool and city

Think about three things: pool size, how many people swim, and how dirty your surroundings get.

• Pool up to about 10 to 12 feet across with a family of four: a cartridge filter is usually enough.
• Larger frame pool, such as a rectangular or oval Steel Pro MAX with regular guests: a sand filter pump makes life easier.
• Dusty city like Delhi NCR, Jaipur or Hyderabad in summer: sand copes better, or keep spare cartridges ready.
• Pool under trees, such as in a Bengaluru or Pune villa garden: expect more leaves, so skim daily whichever filter you use.
• Water scarcity in your area: cartridge saves water as there is no backwash.
• Hard water or borewell supply: either works, but pair it with correct pH and a scale control product.

For a simple Easy Set or Fast Set inflatable pool, the cartridge filter that comes with it is designed for that volume. Upgrading is not usually needed unless you run the pool with many swimmers.

When you browse our pools range, check which pump or filter is listed with each model. If you want a different filter for a larger pool, message us on WhatsApp and we will tell you which one is compatible.

Running time and maintenance

Whichever filter you choose, the pump has to run long enough to filter the full pool volume at least once, ideally two to three times a day in peak summer. A common routine for Indian summers is to run it for 8 to 10 hours, split into morning and evening. Always follow the instructions that come with your own model.

Simple routine

• Skim leaves and insects from the surface every morning.
• Check the pressure gauge on a sand filter. Backwash when it rises noticeably above its clean reading.
• Rinse the cartridge when water flow looks weaker or water looks hazy.
• Check chlorine and pH after every heavy-use day. Read our shop pages for pool care accessories you may need.
• Run a few hours extra after a pool party, a dust storm or a rain.

Good filtration cuts down on chemical use and keeps the water sparkling. Poor filtration makes you add more chemicals and still end up with green or cloudy water.

Most of our pools are mostly imported to order from Bestway and Intex. You book with a 30% advance, delivery takes 4 to 7 weeks, and the balance is paid when your order reaches the Bangalore warehouse, before dispatch. Sizes marked In stock are simpler: you pay in full and get delivery in about 1 week. So decide on your filter early and add it to the order.

Frequently asked questions