In addition to vacuuming, I would still recommend brushing the pool as frequently as possible, especially while SLAMMING. In fact, when I SLAMMED my pool last year, I was vacuuming the first few days of the SLAM, once I started brushing regularly, my SLAM sped up tremendously. I actually stopped vacuuming altogether and just focused on brushing 3-4 times a day. In my opinion, brushing was much more effective then vacuuming.