There was a lot of issues with our plaster WetEdge Technologies Deep Blue Sea, before filling it looked bad and streaked see pic
Here is a video of the streaking:
Wetedge 2/16 bad finish on Vimeo
It looks worse in shade then bright sun. FWIW. Im brushing twice a day but don't see it helping. Im doing a low alk startup per pool builder but have little faith that will fix it.
I submitted a warranty claim with wet edge. Pool builder commented trowel by hand causes this like its normal.