Quick verdict
The cheapest, simplest way to filter an above-ground pool. Basic filtration and frequent cartridge care, but unbeatable on price and plug-and-play ease.
Ideal for
- Intex-style above-ground pools
- Seasonal pools up to ~15,000 gal
- Owners who want cheap, plug-and-play setup
Not ideal for
- In-ground pools
- Owners wanting fine filtration or long cycles
The full picture
For above-ground and Intex-style pools, this is the simplest filtration there is: a combined cartridge filter and pump that you connect with a couple of hoses and plug in. The C2500 moves 2,500 GPH (about 1,900 GPH through the system) and suits above-ground pools up to roughly 15,200 gallons, using easy-to-clean Type B Dacron cartridges you rinse or swap every couple of weeks. It's not a dedicated tank filter — filtration is basic and the cartridges need frequent attention — but for a seasonal above-ground pool, the low price and plug-and-play setup are exactly what most owners want.
Intex Krystal Clear C2500 Cartridge Filter Pump at a glance
- Filter type
- Cartridge (filter pump)
- Filter area
- Type B cartridge
- Flow rate (GPM)
- 42
- Filtration (microns)
- ~15–25
- Backwashing required
- No
- Filter media
- Type B Dacron cartridge
- Tank material
- Plastic housing
- Valve
- Hose fittings
- Pool type
- Above-ground
- Max pool size (gal)
- 15,200
- Notable feature
- All-in-one pump + filter; 2,500 GPH, plug-and-play
Source: Compiled from manufacturer specifications, retailer listings, and aggregated owner feedback. Specs and prices change — confirm with the retailer before buying.
This is a research-based review — our analysis draws on manufacturer specifications, manuals, warranty terms, and verified owner feedback rather than our own hands-on testing, and we note where a detail couldn't be confirmed. How we review
The in-depth review
For above-ground and Intex-style pools, the C2500 is the simplest filtration there is: a combined cartridge filter and pump you connect with a couple of hoses and plug in.
Why owners buy it
The appeal is price and simplicity. It moves 2,500 GPH (about 1,900 GPH through the system) and suits above-ground pools up to roughly 15,200 gallons, using easy-to-clean Type B Dacron cartridges. There's no plumbing, no tools, and some versions add a built-in timer so it runs on a daily cycle. For a seasonal pool where you just want clean-enough water without a project, it does exactly that for very little money.
The honest caveats
This isn't a dedicated tank filter. Filtration is basic, and the small cartridges need rinsing or replacing roughly every two weeks — far more often than a real cartridge filter's cleaning interval. Durability is budget-tier, and it's strictly for above-ground pools.
Performance breakdown
Research-based editorial judgments from specs, warranty terms, and verified owner feedback — not lab measurements. How we score
Pros and cons
What works
- Cheapest filtration option
- All-in-one pump + filter
- Plug-and-play setup in minutes
- Some versions include a timer
What doesn't
- Basic filtration
- Cartridges need changing every ~2 weeks
- Above-ground only
- Not durable like a tank filter
Best alternatives to Intex Krystal Clear C2500 Cartridge Filter Pump
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Pentair’s durable fiberglass-reinforced sand filter — a uniform sand bed and clamp-style multiport valve for reliable, low-cost filtration.
Frequently asked questions
Is this a filter or a pump?
Both — it’s an all-in-one cartridge filter pump. The motor circulates water through a replaceable cartridge, so you don’t need a separate tank filter. That simplicity is its main appeal for above-ground pools.
What size pool does it fit?
Above-ground pools up to about 15,200 gallons. It moves 2,500 GPH (roughly 1,900 GPH through the system), which suits typical Intex-style setups.
How often do I change the cartridge?
The Type B cartridges are rinsed or swapped roughly every two weeks depending on use — more often than a tank filter’s cleaning interval, which is the tradeoff for the low price and simplicity.
Can I use it on an in-ground pool?
No — it’s designed for above-ground pools. In-ground pools need a dedicated tank filter (sand, cartridge, or D.E.) matched to a proper pump.
Does it filter as well as a real cartridge filter?
Not as finely or for as long — the small cartridge filters basic debris and needs frequent changing. For a seasonal above-ground pool it’s adequate; for clarity, a dedicated tank filter is far better.
Is setup really that easy?
Yes — connect the two hoses to your pool’s fittings and plug it in. No plumbing or tools, which is why it’s the default for Intex-style pools.