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When I am performing my waterchanges should I add buffers along with the salt mix to the RO/DI water before adding to the tank. Or is the saltmix and RO/DI water good enough?
It really depends on what you want out of the final product. At times I will add a buffer to either keep a higher stability than the salt mix allows for or increase a parameter such as pH, Ca, or Alk. Make sure your calculations are accurate through testing if you decide to use supplementation.