Quote Originally Posted by Photo Engineer
Do not mix household bleach or any hypochlorite containing product with ammonia containing products. Anything with the potential to generate chlorine mixed with ammonia generating materials will produce a very toxic gas.

Thanks for the warning, but I haven't forgotten that much chemistry. The two trays were even spaced a fair distance apart to prevent splashes.

The color had migrated to a slightly green tinted blue by the time things were dry. Here's the example I promised: