Plaster effects depend on a combination of several different levels and just how far off they are. The levels you originally posted showed CH and PH high, but TA on the low end of normal. The low TA will partially cancel out the high PH and CH levels. Given reasonable assumptions of just how high the PH went, the odds favor no problems in just a week. However, if PH went up to 8.8 or above, which is unlikely, then I would expect there to be some calcium scaling after a week.