I just had my pool replastered with Quartzscapes this past Thursday and it is now Wednesday. I've been brushing the pool everyday and following my PB's instructions for the chemistry. This past Monday I started adding calcium for hardness. The next day I noticed discolorations in the bottom of the pool. Does anyone have any idea what this might be? My ph is high so I'm assuming it might be scale and not mottling. Please help!!!