Put my new pool in last year (Diamond Brite Tahoe Blue) and followed all recommended practices, as did the pool builder - brushing, acid, etc. I experienced the same problem with white streaks and blotchy white spots all over the pool. Pool builder drained the pool and did another acid wash, but it only made the problem marginally better. Soon afterward, the streaks and blotchy white spots got worse. Fast forward to one year later and my pool builder is replastering the pool under warranty with Diamond Brite Super Blue. If you Google "Diamond Brite White Streaks" you will find several hits which all seem to revolve around the darker Diamond Brite colors (Tahoe Blue, Midnight Blue, etc.) which seem to be prone to streaking. I went with the Diamond Brite Super Blue, as it has a white plaster base, but a higher concentration of blue quartz aggregate to give the water a rich blue color. Pool builder brought the Diamond Brite rep down from Dallas (I live in New Orleans) to show him the problem but the rep has yet to respond. Hats off to my pool builder for replastering under his warranty and good name, at his expense!! He will take up the fight with Diamond Brite to hopefully get reimbursed for his warranty work.

Let me know if you have any questions.

Ronnie