Hi new to the forum, just had my pool built and it has been filled for thirty day now. Have quartzscape onyx plaster finish. Getting some white discoloration on the bottem of the pool in areas, very prominent in the shallow and deep end. Pool water pH has been 7.2 and below with brushing since new. Pool builder says this is normal and will clear up with time? He is very supportive and said if it does not they will redo the plaster. Really do not want to have the plaster redone at all. Water was trucked in. no metal issues? Thoughts, ideas, attached are some photos. BJM[attachment=2:23af78g9]plaster4.JPG[/attachment:23af78g9][attachment=1:23af78g9]plaster6.JPG[/attachment:23af78g9]