we finally got a chance to take apart the sand filter and check the spider gasket. It looked ok. Before we started taking sand out to check the laterals we noticed a crack where the hose goes in. There was a tiny crack there last yr but it barely leaked so we kept using it. I don't think its useable this time, the crack is completely across and much wider. So looks like we will be buying a new sand filter too. Would it be cheaper to get a pump/filter combo? Or is it no different in cost to buy them separate?