Hey,
I know there have been some posts about what to do with bad discharge / water base inks. We are getting rid of some today so here you go. Take one 5 gallon bucket, do 30% waste ink, 20% waste diptank water, and 50% concrete. Mix. Throw in sun for a few days. Depending on environment maybe a little more water. Next thing you know you can make a really ugly igloo or park bench