I bought the intex swg and thinking about opening the pool within the next few days or weeks. The weather is in the 80s here but supposed to be in the 60s next wk. I know I have to test the water. Yesterday I tested PH which is 7.2 and FC which is 0 so I know to add shock to the pool. When I connect filter, do I connect the swg too but just not start it? Should I add salt right away or can I wait a couple of days before I do that? When I shock to pool what do I use to keep the FC up until the water is balanced to run swg?