I have reoccurring kidney stones. removed 3 times since end oct. i increased hydration an quit salt is there a reason for reoccurrence ?

Need a specialist: It sounds like you've read or been told correctly: increase water/fluids and decrease sodium. You might have had residual stone debri as a cause or you may have an infection related type stone. There are also genetic, inherited, and dietary causes of stones that simply increasing fluids and cutting back on sodium will not address. You should seek the care of a nephrologist for further testing.

Determine cause: Stones have a cause. Most stones are calcium oxalate. A 24 hour urine sample is required to assess urine chemistry: content of oxalate, calcium, sodium, citrate, phosphate, and uric acid. Increase daily fluid to 4 liters; add lemon extract: 5 tablespoons per day of ReaLemon; minimize meat; minimize oxalate rich foods: beets, spinach, rhubarb, strawberries, nuts, chocolate, tea, wheat bran; beans