20ppm is okay. We suggest setting this to 20PPM. This is the strength of most commercial colloidal silver. You can also try to run related programs for him with remote. Besides you can do BFB scan for him with a GeneratorX and sample digitizer and then run the scan result to give him a best needed treatment in remote mode as suggested by Charles. It's better to run a detoxing program on another generator at the same time to help detoxify the lymph system, liver and kidneys to address the potential detoxification issue.
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