Kidney Stones after RNY are they forever?

I have searched OH and found that many post RNYers have had kidney stones.  Is this something that occurs within a short time after the surgery (I am 2 1/2 years out) or I am looking at a life time of these little pests? I have had 3 diagnosed in the last year, 2 surgeries done, one emergency last Saturday and one to go. They are not only painful, so are the stents.

I have heard that many of you have had success taking with lemon juice or lemonade daily.  Do any of you take Potassium Citrate? Just wondering to prevent further stones.

I drink 2 litres of water daily (purified) and always have and I try to keep salt to a minimum.  The Urologist thinks the cause is dehydration because of the RNY surgery. 

These surgeries in additional to my 3 related Petersen Hernia surgeries are certainly keeping me and the Docs busy.

A bunch of things can cause kidney stones. But the most common, by far, is not drinking enough. 

After WLS, we are burning fat and processing a high protein diet. That requires even more water than usual. So however much you've been drinking, drink more.