Reinstall the clamp band, tightening until all spring sides touch each other. When you backwash your d.e. Pin on Swimming Pool If not, add more water to the pool. How to open an inground pool with a de filter . With water to form a wet sludge, and then pour the solution directly into the skimmer. That is your clean filter pressure. Pump off any excess rain water with a submersible pump. Turn off and unplug the pool pump. Uncover the skimmer closest to the pump and filter, and slowly pour the needed amount into the skimmer while the system is running. Open the drain plug located on the bottom of the filter allowing the water inside the tank to be drained out. Below are the steps for opening your inground pool. You may want to add extra water to the pool because when you’re vacuuming the pool for the first time, its best to vacuum it with the diverter handle in the waste position so the debris is discharged without sending it through the filter. Add de powder to the...