500mg

Has anybody tried the vitamin C (ascorbic acid) to dechorlinate their water? I've recently started trying it (500mg per 20 gallons). What were your results?

what about the Co2 extracted hash oil? is it Decarboxylated and ready to use or does the melting of the hash oil into the oil to be used in the recipe do that? I have 500mg or 1/2 gram of hash oil in a syringe. I can go buy more I just wanted to try it before I commit more.