How to Vacuum Inground Pool? | Step-by-Step

Guide / By

Vacuuming an inground pool means slowly guiding a brush head across the floor while the pump pulls debris through the filter.

For the full breakdown, see our best Cordless Pool Vacuum for Inground Pool guide.

Nobody enjoys a gritty pool floor. The grit feels like sandpaper underfoot, and it clouds the water until it settles again. The fix is a straightforward manual vacuuming routine that takes about an hour. You don’t need a pressure-side cleaner or a robotic helper to get a spotless floor. A pole, a head, a hose, and your pump’s suction do the job. The process comes down to one critical move: purging every bit of air from the hose before you connect it, or the vacuum simply won’t pull.

What Equipment Do You Need?

You almost certainly already own everything required. The standard manual setup includes four pieces, and they work together like a single long straw.

  • Vacuum head, which is the wide brush that glides along the plaster or fiberglass floor.
  • Telescoping pole that locks onto the head and reaches across the pool from the deck.
  • Vacuum hose, usually 1.5 inches in diameter, long enough to reach every corner.
  • Skimmer vacuum plate, sometimes called a skimmer disk, that seals into the skimmer basket; some pools instead use a dedicated suction port built into the wall.

If your skimmer has a bottom suction hole, you can often insert the hose directly there. Otherwise, the vacuum plate is the standard adapter. Each piece matters, but the hose priming step is where most people go wrong.

How Do You Connect and Prime the Vacuum?

Turn the pump off first. Attaching anything while water is moving can pull air into the line and make the prime nearly impossible.

  1. Lock the vacuum head onto the telescoping pole.
  2. Screw one end of the hose onto the head.
  3. Lower the head into the pool so it rests on the floor near the shallow end.
  4. Hold the hose’s free end in front of a return jet with the pump running. Bubbles will pour out as water pushes the air out. Keep it there until the bubbles stop completely.
  5. Keep the free end underwater and bring it to the skimmer. Insert it into the vacuum plate or the suction port.

This is the step that wins the job. If you skip the bubble purge, air stays trapped in the hose, and the pump pulls air instead of water, which destroys suction. Home Depot’s how-to guide confirms this exact sequence: submerge the head, hold the free end at a return outlet until bubbles stop, then seat the hose in the skimmer plate.

Which Filter Setting Should You Use?

Light daily debris goes through the Filter setting, while heavy sand, leaves, or cloudy water should be sent to Waste. SwimmingPool.com’s maintenance guide makes this distinction clear: Filter is for light vacuuming, and Waste is for bigger jobs because it sends water out of the pool rather than through the filter. If you have just finished a flocking treatment or the pool is full of debris, Waste keeps the filter from clogging and blasting fine particles back into the water.

The trade-off matters. Waste lowers the water level because it drains pool water to the sewer or yard. Plan to run a hose to the pool afterward to restore the level. Also check your pump strainer basket before you start, and clear it, because a clogged basket reduces suction and can cause the pump to run dry.

How Do You Vacuum the Floor Properly?

With the pump running and the hose seated, you’re ready to move. The technique is simple but unforgiving: slow, straight, overlapping strokes. Fluidra’s commercial-solutions guide describes the same manual sequence of turning the pump on, moving slowly around the floor and walls, then disconnecting when done.

Push the head ahead of you, then pull it back slightly so each pass overlaps the last by a few inches. This prevents stripes of missed dust. If the head suddenly sticks to the floor, resist the urge to yank it. Stop the pump, reposition the head, and restart. Forcing it can scratch the plaster or tear a liner seam.

When you’re done, turn the pump off, disconnect the hose from the skimmer, and backwash or clean the filter. If your system uses skimmer valves, make sure the main drain is partially closed during vacuuming to concentrate suction on the hose; a fully open main drain can starve the vacuum line of flow.

Manual vacuuming works well, but it does take time and attention. If your schedule rarely allows a full hour on the pole, a cordless robotic option can handle routine maintenance, and our roundup of the top cordless pool vacuums for inground pools compares the best models for that job.

FAQs

Why does my pool vacuum keep losing suction?

The most common cause is air in the hose. If you did not hold the free end at a return jet until bubbles stopped, the line carries air instead of water. Check the skimmer basket too; a full basket blocks flow. Finally, the pump strainer can be clogged, so inspect and clear it before blaming the equipment.

Can I vacuum a pool on the Waste setting?

Yes, and it is the best choice for heavy debris or after a chemical treatment that leaves a lot of sediment. Waste sends water out of the pool, bypassing the filter entirely, so it never clogs. Remember that it lowers the water level, so you will need to add make-up water afterward.

How often should I vacuum an inground pool?

Weekly vacuuming keeps algae and sediment from settling into the floor. If you run the pump daily and use a robotic cleaner, you can stretch this to every other week in summer. After a storm or a pool party, vacuum promptly because debris breaks down and feeds algae within a few days.

References & Sources

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