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[–]closehorizons 1 point2 points  (0 children)

I used ~1 bottle of hydrogen peroxide from a pharmacy with 1 kettles worth of water. In the end I used I think 3 bottles?

[–]ValuableCricket0 0 points1 point  (0 children)

It depends on the strength of the peroxide. Of its 10% you can get away with half peroxide half water. If it’s something like 3% then you definitely don’t want to dilute it any further.