Intex SX3000 Sand Filter Pump Review: Is It Worth the Upgrade?
Updated: Sep 11
The Intex SX3000 sits near the top of Intex’s standalone Krystal Clear sand-filter range, pairing a larger 16-inch filter tank with a 0.75 HP pump, automatic timer and six-function control valve.
On paper, the headline 3,000 GPH figure makes it sound like a major step up from smaller Intex filters. But there’s an important distinction: 3,000 GPH is the pump flow rate. Once the water is moving through the complete filtration system, Intex rates the SX3000 at 2,450 GPH.
That is still plenty of filtration for many larger above-ground pools, but it gives us a much more useful number when deciding whether the SX3000 is actually big enough for your pool.
This review covers model 26651EG.
Quick Verdict
The Intex SX3000 is one of the stronger options in Intex’s sand-filter lineup if you have moved beyond a small above-ground pool and want a system that needs less hands-on cleaning than a cartridge filter.
The 16-inch tank, 120 lb sand capacity and 2,450 GPH system flow give it noticeably more filtration capacity than the smaller Intex sand filters, while the timer and six-function valve make routine filtering and backwashing straightforward.
Intex rates it for pools from 5,500 to 19,600 gallons, but we would be more conservative at the upper end. Using the 2,450 GPH system-flow figure, a 19,600-gallon pool works out at roughly an eight-hour turnover. If you prefer to aim for a turnover of around six hours or less, the SX3000 makes more sense up to roughly 14,700 gallons.
Best for: Larger above-ground pools where you want a substantial sand-filter system without moving into more expensive traditional pool equipment.
Skip it if: Your pool is relatively small, you dislike backwashing, or the smaller SX2800 gives you enough capacity at a significantly lower price.
Intex SX3000 Specifications
The two figures that matter most are the 2,450 GPH system flow and the 16-inch filter tank. The SX3000 uses considerably more filter media than smaller Intex systems, with 120 lb of No. 20 silica sand or 85 lb of glass media required for the tank.
3,000 GPH vs 2,450 GPH: What Does the SX3000 Actually Deliver?
This is probably the most important specification to understand before buying the SX3000.
Intex calls it a 3,000 GPH pump because that is the pump’s rated flow. But once the pump, hoses and filter are working together as a complete system, the rated flow drops to 2,450 GPH.
For pool sizing, we care much more about that second number.
At 2,450 GPH, the theoretical turnover times are:
7,500 gallons — about 3.1 hours
10,000 gallons — about 4.1 hours
12,500 gallons — about 5.1 hours
14,700 gallons — about 6 hours
19,600 gallons — about 8 hours
Real installations can vary depending on plumbing, hose length, filter condition and other restrictions, so these are best treated as useful sizing estimates rather than guarantees.
That is why we think the SX3000 is particularly comfortable in the middle of its stated pool range rather than assuming the maximum 19,600-gallon rating is automatically the ideal match.
What Pool Size Is the Intex SX3000 Best For?
Intex officially lists the SX3000 for above-ground pools from 5,500 to 19,600 gallons.
We agree that it has the capacity for fairly large residential above-ground pools, but we wouldn't choose a pump purely because the pool falls somewhere below the manufacturer's maximum.
For us, the SX3000 becomes particularly attractive once your pool is large enough that smaller cartridge systems or the lower-capacity sand filters start to feel like a compromise.
If your pool contains around 10,000–15,000 gallons, the SX3000 gives you useful headroom without pushing the system close to its maximum stated capacity.
Once you're approaching 19,600 gallons, the pump can still meet Intex's stated sizing, but you're working with roughly an eight-hour theoretical turnover. Whether that's enough depends on your pool, how heavily it is used and how much debris it collects.
If you're still deciding between the two filter types rather than choosing between individual pumps, our Sand Filter vs Cartridge Filter for Above-Ground Pools guide explains the ownership differences first.
Why the 16-Inch Filter Tank Matters
The SX3000 isn't simply an SX2800 with another 200 GPH added to the name.
The SX2800 uses a 14-inch tank, 77 lb of sand and a 2,150 GPH system flow. The SX3000 moves up to a 16-inch tank, 120 lb of sand and 2,450 GPH system flow.
So the increase in actual system flow is only 300 GPH, but the media capacity rises substantially.
That larger filter bed is one of the main reasons we'd consider the SX3000 for a bigger pool or a system that regularly has more water and debris to process.
The trade-off is obvious too: 120 lb of sand costs more, weighs more and is considerably less pleasant to remove when the time eventually comes to replace it.
Six-Function Valve: More Useful Than It Sounds
The six-function control valve gives you:
Filter
Backwash
Rinse
Recirculate
Drain
Close
For day-to-day ownership, Filter, Backwash and Rinse are the settings you'll care about most.
Instead of opening a cartridge housing and washing a dirty filter element by hand, routine cleaning is largely handled by moving the valve through the backwash and rinse cycle.
The Drain and Recirculate settings are useful when you need more control over where the water is going, while Close shuts the flow path through the valve.
Built-In Timer
The SX3000 includes a 24-hour timer with preset operating periods from 2 to 12 hours.
This is one of those features that doesn't sound particularly exciting until you've owned a pump without a convenient schedule.
Once you've worked out an appropriate daily filtration time for your pool, the timer allows the pump to repeat the schedule without you having to remember to switch it on and off every day.
That is especially useful with a larger sand-filter system that you want running consistently through the swimming season.
Pressure Gauge and Strainer Basket
The pressure gauge helps you keep an eye on resistance through the filter.
What matters isn't obsessing over one exact pressure reading; it's learning what the gauge normally shows when your filter is clean. When pressure rises noticeably from that baseline, it is usually a sign that the filter bed needs attention.
The clear-lid strainer basket also catches larger material before it reaches the pump and filter tank, and it can be removed for cleaning.
Those are simple features, but together they make routine ownership much easier than relying on guesswork.
What Filter Media Does the SX3000 Use?
The simplest choice is 120 lb of No. 20 silica pool filter sand.
That's what we'd start with for most owners. Sand is inexpensive, widely available and is the media this style of filter is built around.
If you need help choosing it, see our Best Pool Filter Sand for Above-Ground Pools guide.
Intex also specifies 85 lb of glass media for the SX3000.
Intex also lists 3.3 lb of fiber-ball media as another option. Because media compatibility can vary, we'd still check the instructions supplied with your current filter and chosen media before switching away from traditional sand.
If you're weighing the ownership differences, our Sand vs Glass vs Filter Balls guide explains when each one makes sense.
What We Like About the SX3000
The larger filter tank gives you useful capacity. The move to a 16-inch tank and 120 lb of sand is more meaningful than simply looking at the 3,000 GPH model name.
2,450 GPH is enough for many larger above-ground pools. It gives you considerably more headroom than the small cartridge pumps commonly bundled with above-ground pool sets.
Backwashing is easier than cleaning large cartridges. If you're tired of removing and rinsing cartridges, the sand-filter ownership model is appealing.
The timer is genuinely useful. Once your daily run time is set, routine filtration becomes largely automatic.
The valve gives you proper system control. Backwash, rinse, recirculate and drain make the system far more flexible than a basic cartridge pump.
What We Don't Like
The 3,000 GPH name is easy to misunderstand. The complete system is rated at 2,450 GPH, and that's the number we'd use when sizing it.
120 lb of sand is heavy. Filling the tank isn't difficult, but emptying and replacing that media later is much less convenient than changing a cartridge.
Filter media isn't included. Budget for the required sand, glass or compatible alternative when comparing the purchase price.
It may be unnecessary for a small pool. Bigger is not automatically better. If your pool is well within the capacity of an SX1500 or SX2800, there isn't much value in buying a much larger filter simply because you can.
SX3000 vs SX2800: Which Would We Choose?
The difference is smaller than the model names suggest.
The SX2800 has:
2,150 GPH system flow
14-inch tank
77 lb sand capacity
0.6 HP motor
manufacturer maximum of 17,200 gallons
The SX3000 has:
2,450 GPH system flow
16-inch tank
120 lb sand capacity
0.75 HP motor
manufacturer maximum of 19,600 gallons
So you're gaining 300 GPH of actual system flow, but you're also getting a meaningfully larger filter tank and media bed.
If the two are close in price and you have the space for the SX3000, we'd lean toward the SX3000 for a larger pool.
If the SX2800 is substantially cheaper and already provides enough capacity for your pool, it's still an excellent middle-ground option.
Read our Intex SX2800 Sand Filter Pump review for the smaller alternative.
Still comparing sand filters? See our Best Sand Filters for Above-Ground Pools to compare the models we'd choose for different pool sizes and filtration needs.
Who Should Buy the Intex SX3000?
We'd shortlist the SX3000 if:
you have a medium-to-large above-ground pool
you want to move away from cartridge cleaning
you prefer having extra filtration headroom rather than running close to a pump's limit
you want an automatic filtration schedule
you are comfortable backwashing the filter and dealing with a large quantity of media
For owners upgrading from an undersized pump that came bundled with the pool, this can feel like a much more substantial filtration system.
Who Should Skip It?
The SX3000 isn't the right answer for every pool.
For a smaller above-ground pool, you're likely paying for capacity you don't need.
If you strongly prefer cartridge filtration and don't want to backwash or handle 120 lb of sand, a higher-capacity cartridge system may suit you better.
And if you're comparing the SX2800 and SX3000 purely on headline flow rate, remember that the actual system-flow difference is only 300 GPH. The larger filter tank is as important as the pump-flow increase.
Our Final Verdict
The Intex SX3000 is a strong step-up sand filter for above-ground pool owners who want more capacity than the smaller Intex systems without moving into significantly more expensive traditional pool equipment.
Its biggest strengths are the 16-inch filter tank, 2,450 GPH system flow, automatic timer and simple backwash maintenance.
We wouldn't automatically size it for every pool up to Intex's 19,600-gallon maximum. If we were aiming for roughly a six-hour turnover, we'd feel much more comfortable around the 14,700-gallon mark or below, leaving some useful capacity in reserve.
For the right pool, though, the SX3000 hits a useful middle ground: substantially more capable than the small pumps commonly included with above-ground pools, while still retaining the straightforward Intex setup many owners are familiar with.
Frequently Asked Questions
What is the actual flow rate of the Intex SX3000?
The pump itself is rated at 3,000 GPH, but Intex lists the complete system flow rate at 2,450 GPH. We use the 2,450 GPH figure when considering pool turnover and practical sizing.
What size pool is the Intex SX3000 suitable for?
Intex rates the SX3000 for pools from 5,500 to 19,600 gallons. At the rated 2,450 GPH system flow, a 19,600-gallon pool works out at roughly an eight-hour theoretical turnover. If you prefer to aim for around six hours, approximately 14,700 gallons is a more conservative upper target.
How much sand does the SX3000 need?
The SX3000 uses 120 lb of No. 20 silica pool filter sand.
Can you use glass media in the SX3000?
Yes. Intex specifies 85 lb of glass media as an alternative to traditional pool filter sand.
Does the Intex SX3000 include the filter sand?
No. The filter media is not included, so you need to purchase the required sand or compatible alternative separately.
Does the SX3000 have an automatic timer?
Yes. It has a built-in 24-hour timer with preset operating cycles from 2 to 12 hours.
What is the difference between the SX2800 and SX3000?
The SX3000 uses a larger 16-inch filter tank with 120 lb of sand and has a 2,450 GPH system flow. The SX2800 uses a 14-inch tank with 77 lb of sand and has a 2,150 GPH system flow.
More Filtration & Pump Help
Still comparing options for your above-ground pool? Visit our Filtration & Pumps hub for our latest sand and cartridge filter reviews, comparisons, filter-media guides, and help choosing the right system for your pool size.
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