Join Date: Sep 2017
Location: Greeley, Colorado
I've had very good results using oxalic acid mixed in hot water (4 table spoons per gallon of H2O). The electrolysis method seems complicated and messy. Oxalic acid can be pour down the drain. The local Ace Hardware has it, it's used to bleach wood decks and is sometimes called "wood bleach".
As for it's toxicity, don't drink and use rubber gloves and you'll be fine:
What foods are high in oxalic acid?
Lists of foods high in oxalic acid vary greatly from source to source. The body is known to absorb oxalic acid from only a handful of foods, according to the University of British Columbia, including peanuts, pecans, wheat bran, spinach, rhubarb, beets and beet greens and chocolate.
Last edited by P89DC; 02-05-2018 at 05:23 PM.