I recently got the results of my ICP test and it showed high Silicates. I read that Anion DI resin would help remove most of it. I purchased the Anion and filled the first cartridge with it. The second and third cartridges are filled with mixed resin. I mixed a batch of saltwater last night. Something told me to double check to make sure I was doing everything right and now I see that you should use Cation resin along with the Anion. Is it OK to use the water I mixed for a water change or should I dump it? Also, should I remove the anion until I get the cation because I'll need to refill the ATO in the next day or so?