How do you vacuum a pool step by step?
Start by assembling the gear: screw the vacuum head onto the end of a telescopic pole, clip the vacuum hose to the head, and lower the whole thing to the pool floor. The head sits flat on the bottom and the hose runs up to the surface. Leave the pump running the entire time, because on a manual vacuum the pump is what creates the suction that pulls debris up the hose.
Next, prime the hose so no air gets into the pump (the step most beginners skip, covered in its own section below). Once the hose is full of water, cap the pole end with your hand and carry that end to the skimmer, then plug it onto the suction fitting at the bottom of the skimmer basket (or onto a dedicated vacuum port if your pool has one). You should feel the head grab the floor as suction takes hold.
Now vacuum. Move the head slowly across the floor in straight, overlapping passes, like mowing a lawn, letting each stroke pull up the dirt before you move on. Slow and steady keeps debris flowing into the hose instead of billowing back into the water. Work from the shallow end toward the deep end, get into corners and steps, and empty the skimmer or pump basket partway through if it fills up. When you finish, brush the walls, and if the water is hazy afterward, let the filter run and check the cloudy pool guide.
Should you vacuum on Filter or Waste?
Use Filter for everyday dirt and leaves, and Waste for heavy debris, algae, or very fine dust. On Filter, the water you vacuum runs through the filter and returns to the pool, so you lose no water; that is right for normal cleanup. On Waste (also called Drain on some valves), the water bypasses the filter and goes straight out the backwash line, which is what you want when the debris is either too heavy or too fine to keep in your system.
The Filter-versus-Waste choice only exists on a multiport valve, which is what sand and DE filters use. To vacuum to waste, stop the pump, turn the multiport handle to WASTE, then restart and vacuum. The one rule that saves expensive repairs: never move the multiport valve while the pump is running, because doing it under pressure tears the internal spider gasket. Vacuuming to waste drops your water level fast, so run a garden hose into the pool at the same time and top it back up when you finish.
A cartridge filter has no Waste setting, so you either vacuum through the filter and clean the cartridge afterward, or fit a leaf-canister that traps debris before it reaches the pump. Either way, expect to rinse or deep-clean the filter after a big vacuum job; the pool filter cleaning guide covers backwashing a sand or DE filter and hosing down a cartridge.
How do you get the air out of the vacuum hose?
Priming the hose means filling it completely with water so no air reaches the pump, and it is the fix for a vacuum that will not hold suction. The easiest method: with the vacuum head and hose already in the pool, hold the free end of the hose in front of a return jet. The jet pushes water down the hose and forces the air out; you will see a stream of bubbles rise from the vacuum head, and when the bubbles stop, the hose is full.
If you do not have a strong return jet, feed the hose into the water slowly, a section at a time, letting each length fill before you push in the next until the whole hose is submerged and burped of air. Only then cap the end with your palm and move it to the skimmer, keeping it capped so air cannot sneak back in before you connect.
Skipping this step is why a manual vacuum often fails on the first try. Air pulled into the hose collects in the pump basket, the pump loses prime, and suction dies. If suction fades mid-job, look for a swirl of air in the clear pump lid; that means a loose hose connection or a hose end that lifted above the water, and re-priming fixes it.
How do you vacuum a pool with no pump or filter?
You can vacuum a small or above-ground pool with no filter system at all using a garden-hose vacuum, which creates suction from your hose water through a venturi head and blows the debris into an attached mesh bag instead of through a pump. These are cheap, work on Intex-style soft-sided pools, and are the standard answer when there is no skimmer suction to tap. The bag catches leaves and grit while the hose water spills into the pool, so top-up and dirt removal happen together.
The other pump-free route is a battery-powered cordless pool vacuum: a handheld or rechargeable head with a built-in debris chamber that you push around the floor by hand. It needs no hose, no skimmer, and no pump running, which makes it the go-to for above-ground and inflatable pools. It has limited runtime and a small capacity, so it suits spot-cleaning rather than a heavily leaf-covered pool.
If your pool does have a pump but the debris is fine (sand, silt, dead algae), a pump-free method actually helps, because it removes the dirt without loading or clogging your filter. For matching the tool to the pool, the pool vacuum guide breaks down manual, suction, and cordless options.
Why is my pool still dirty after vacuuming, and how do you vacuum algae?
If dirt reappears or a cloud lingers after you vacuum, the debris is usually too fine to stay trapped in the filter, so it passes through and settles right back on the floor. Dead algae, pollen, and silt are the common culprits. The fix is to vacuum to waste so that fine material leaves the pool entirely instead of cycling through the filter and back out the returns.
For algae specifically, brush the walls and floor first to knock the growth loose, let it settle for a few hours, then vacuum slowly to waste so you are not blowing spores around the pool. Move at half your normal speed; a green or mustard layer clouds up instantly if you rush. Clearing algae is a chemistry job as much as a vacuuming job, so pair this with the algae removal guide and balance the water with the right calculator, such as the chlorine calculator.
When particles are so fine they slip through even a clean filter and will not vacuum up cleanly, treat the water chemically before you vacuum: a clarifier clumps fine particles so the filter can grab them, and a flocculant sinks everything to the floor to vacuum to waste in one pass. The clarifier versus flocculant comparison explains which to reach for and when.
Should you use a manual vacuum or a robotic cleaner?
Use a manual vacuum for precision jobs and a robotic cleaner for routine whole-pool cleaning. A manual vacuum is unbeatable when you need to target a specific mess, vacuum a defined area, or send algae and fine dust straight to waste, because you control exactly where the head goes and where the water ends up. The trade-off is that it takes your time and ties up the pump's suction while you work.
A robotic cleaner runs on its own low-voltage motor and filter, independent of your pump and filter, so it scrubs the floor, walls, and waterline on a schedule without stealing filter flow or dropping your water level. It captures debris in its own basket, which you rinse out afterward. Robotics cost more up front but save the most labor for a pool that just needs regular upkeep.
Most owners end up with both: a robot for the weekly clean and a manual rig on the shelf for algae blooms, post-storm debris, and vacuuming to waste. The robotic pool cleaner guide covers the automatic options, and keeping either one on a routine is easiest with the pool maintenance schedule.
Frequently asked questions
How do you vacuum a pool for beginners?
Attach the vacuum head to the telescopic pole, clip on the hose, and lower it to the floor. Prime the hose by holding its free end at a return jet until the air bubbles stop, cap the end with your hand, and plug it into the skimmer suction with the pump running. Then move the head slowly in overlapping straight passes from shallow to deep. Slow strokes are the key so you pull up dirt instead of clouding the water.
Do you vacuum a pool on backwash or filter?
Neither on backwash. Vacuum on Filter for ordinary dirt so the water returns to the pool, or on Waste for algae, fine dust, and heavy debris so it bypasses the filter and leaves the pool. Backwash reverses flow to clean the filter itself and is not a vacuuming setting. Always stop the pump before moving a multiport valve to any position.
Should the pump be running when you vacuum a pool?
Yes, for a manual (suction) vacuum the pump must be running the whole time, because the pump creates the suction that pulls debris up the hose. The exceptions are pump-free tools: a garden-hose vacuum runs on your hose water, and a cordless battery vacuum has its own motor, so neither needs the pool pump on.
Do you take the skimmer basket out to vacuum a pool?
Leave the basket in place. The manual vacuum hose plugs onto the suction fitting at the bottom of the skimmer well, underneath the basket, so the basket stays in to catch big debris before it reaches the pump. Some setups use a vacuum plate that sits over the basket instead; either way you are not removing the basket, and you should empty it and the pump basket partway through a big job.
Why is my pool still dirty after I vacuum it?
The debris is usually too fine to stay in the filter, so it passes through and resettles on the floor. Vacuum to waste so the fine material leaves the pool for good, and go slower so you are not stirring it up. If it is dead algae or dust that will not vacuum cleanly, use a clarifier or flocculant to gather the particles first, then vacuum, and confirm your filter is clean and running long enough.