I added floc to my pool, didn't follow the instructions properly and now what was just a small cloudy issue has become a disaster. Luckily, my water is balanced and clear on top but there is still leftover floc on the bottom and walls of the pool but water level is too low so I cannot vacuum to waste until Saturday when water is scheduled for delivery so should I keep pump turned off or let it run since floc is already in the filter sand? I also bought new sand and plan to replace sand tomorrow or on Saturday, but after I remove the old sand, deep clean the filter and then add the new sand what do I need to do to make sure my new sand is not contaminated with the remaining floc in the pool?