Hi. Complete newbie here in need of some help. My husband and I recently bought a house that came with a rather large (at least to me) above ground pool. The previous owners filled the pool for our home inspection, so water has been sitting in the pool since late January. In the last couple of days, the water has begun to turn green as the weather gets warmer. We just figured out the sand filter/pump, but that's as far as we have gotten. Basically, we have very little idea what we are doing and no manuals or anything were left behind for our edification. We ordered the TF100 test kit, but it hasn't arrived yet. What additional items/quantities should be purchase to be prepared for the upkeep of our pool? We'd like to purchase supplies to be ready soon. Any pointers/recommendations for getting started once we have the test kit are appreciated.