Hello from Norman, OK. I've been a lurker over the past 1 1/2 years and have faithfully followed the Pool School guidance since moving in to this house. This is the best resource I've found for learning how to maintain a pool, especially for the first time pool owner. This weekend we replaced our leaky Nautilus NS-48 filter to the Hayward S310S and have been happy with the results so far. We'll eventually be looking to upgrade the pump beyond a single speed once this one gives out. Thanks to the moderators for the time/effort to keep this forum running.