I have a rather basic RODI question. I have a RO Buddie 50gpd RODI system for my home aquarium. The membrane and sediment cartridges are working well, production rate hasn't dropped). However, the DI cart has completely changed color and is exhausted. My raw feed runs about 400 ppm dissolved solids (I have a water softener on a well). When the DI was fresh, I was getting 0 to 1 ppm TDS in the product water. Now I'm getting 3.
My question is: how critical is this 2 ppm increase? Is that 2 ppm just a percentage of the total mix of TDS (1/2% increase, mostly softener salt) or is that 2% comprised preferentially of more problematic compounds such as heavy metals or organic toxins?
Thanks,
Jay
My question is: how critical is this 2 ppm increase? Is that 2 ppm just a percentage of the total mix of TDS (1/2% increase, mostly softener salt) or is that 2% comprised preferentially of more problematic compounds such as heavy metals or organic toxins?
Thanks,
Jay