PrimeAgra question

[libby]

I have been growing a dendrobium and a catt in primeagra for a little over a year now, not S/H, but in a clay pot in primeagra. I can easily say that these are my two best performing orchids. I have not had any problems yet, but my concern is the possibility of salt build up in the medium over the long term. I water with well water, and although I have never had it tested, I have read that most well water is fairly high in salts, so I assume mine is as well.

I have also read someplace that leaching is not really effective at getting rid of the salt buildup. My question is - is there a way to control the salt buildup, other than getting an R/O system?