Vacuuming to waste is an essential skill for pool owners, especially when dealing with severe algae blooms, excessive debris, or pool opening after winterization. Unlike standard vacuuming, this method bypasses the filter entirely, ensuring that contaminants are removed without clogging the filtration system. This process will drain some pool water, but it significantly speeds up the removal of algae and debris, preventing it from recirculating back into the pool.
Why Vacuum to Waste?
- Algae Removal: Prevents live algae from being trapped in the filter and potentially re-entering the pool.
- Heavy Debris Cleanup: Helps when removing large amounts of dirt, leaves, or sediment.
- Winter Opening: Clears murky, stagnant water that accumulates during off-season months.
- Filter Protection: Reduces strain on your sand, DE, or cartridge filter by bypassing it altogether.
Step-by-Step Instructions for Vacuuming to Waste
Step 1: Turn Off the Pump
Before making any adjustments to the multiport valve, always turn off the pool pump to prevent damage to the system.
Step 2: Set the Multiport Valve to Waste
Locate the multiport valve on your filter and turn the handle to the “Waste” setting. This setting directs water and debris out of the pool without passing through the filter.
Step 3: Turn the Pump Back On
Once the valve is in place, turn the pump back on. This will immediately start draining pool water, so be mindful of where your waste line is directing the flow.
Step 4: Adjust the Skimmer and Main Drain Valves
- Close all skimmer lines except for one to maintain suction.
- Partially close the main drain valve (about 50%) to maximize suction through the vacuum.
Step 5: Assemble the Vacuum System
- Connect the vacuum head to the telescopic pole.
- Attach one end of the vacuum hose to the vacuum head.
- Submerge the vacuum head and hose to remove air pockets.
- Insert the free end of the hose into the open skimmer with the strongest suction.
Step 6: Start Vacuuming
Begin slowly vacuuming the pool floor, moving in steady, overlapping strokes to prevent stirring up debris. Since the water level will decrease during this process, keep a garden hose running in the pool to maintain the correct level.
Step 7: Monitor Water Levels
Because water is being drained, check the water level frequently. If the level drops too low, turn off the pump to avoid damage and refill the pool before continuing.
Step 8: Turn Off the Pump After Vacuuming
Once you have completed vacuuming, shut off the pump before adjusting the valves or returning to normal operation.
Step 9: Close the Skimmer Valve Used for Vacuuming
Shut off the skimmer valve that was used to vacuum to waste, ensuring proper circulation when restoring normal filtration.
Step 10: Open the Main Drain Valve Fully
Reopen the main drain valve completely to resume proper pool circulation.
Step 11: Set the Multiport Valve Back to Filter
Turn the multiport valve handle back to the “Filter” position to restore normal filtration.
Step 12: Turn the Pump Back On
Start the pump and verify that water is circulating properly. At this stage, water is being filtered and returned to the pool as usual.
Step 13: Refill the Pool
Continue adding water with a garden hose until the pool level reaches the midpoint of the skimmer openings.
Step 14: Open All Skimmer Valves
Restore full functionality by opening all skimmer valves completely.
Step 15: Adjust the Main Drain Valve
Once the pump reaches full prime, adjust the main drain valve back to 50% open. This allows the skimmers to pull in more floating debris efficiently, keeping the water surface clean.
At this point, your pool is back to normal operation, with water properly circulating and filtering.
Using Vacuum to Waste for Pool Winterization
If you’re draining your pool for winter, follow the same steps, with a few minor modifications:
- Close all skimmer valves completely.
- Leave the main drain valve fully open.
- Allow the pump to run until the water level drops 1 inch below the return lines.
- Shut off the pump and proceed with winterization steps.
Pro Tips for Vacuuming to Waste
- Always check where your waste line discharges. Ensure it complies with local drainage regulations and doesn’t flood your yard or neighbors’ property.
- Do not vacuum to waste too often. Frequent draining can lower your water level and disrupt the chemical balance.
- If dealing with algae, follow up with proper chemical treatment. Vacuuming removes the bulk of the problem, but chlorine and algaecide will prevent regrowth.
By following these steps, you’ll ensure that your pool stays clean and free of debris without overloading your filtration system. Vacuuming to waste is an excellent tool for handling tough cleaning situations, making pool maintenance easier and more effective.
