I agree with Tim. The question is why.
Borax is used to raise pH and can help stabilize it a bit. But if you dont have a pH problem, then there really isnt a reason to add it.
If its a water chemistry thing, then post up some test results and we can have a look.
If you want the "shine" to the water and the silky feel, well, I think those are subjective. I Borated my pool and really dont tell any difference between with and without. Again I agree with Tim about waiting to add another variable to the question. Once you have your water balanced for several months on end without any problems and start understanding the chemistry a bit, then thats when its time to experiment with borates.