We've spent the past week killing algae in our swimming pool. We've installed a new filter (Hayward ec65) and are at the point to vacuum out the dead algae from the bottom. The problem we're currently having is the amount of algae at the bottom of the pool is clogging the filter in minutes. Can we leave the clean out valve open while vacuuming the algae out? Or are there any other reasonable options? Or are we stuck bumping and draining til it's clean?!