Yes, I agree that CDS would be the better sodium chlorite solution choice for patch use. Usually you can use CDS full-strength, but to be sure that is okay, dilute it first. If no negative reaction, the reduce dilution. Let us know if that works for you.
CDS is acidic, but less so than CDH or MMS1. And it does not contain any residual MMS or acid activator. If you have high pH water, you could mix that with CDS to raise its pH.
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