My pool is nearly filled back up after draining due to CYA being too high. Question is, when I start adding borax and then baking soda do I need to put it in the skimmer or pour in front of water inlet? And how long do I wait in between putting each in....Also, since the water is 60% replenished and clear...do I need to add enough bleach to shock level or just to 4 PPM? Any answers would be appreciated.