I want to make test tank , I have a 3ft long empty fish tank to test in , I am thinking to use it as the video test tank , with water flowing into and out of the tank so the dye leaves the tank water after being flowed. This off the top of my head so the plan is in its infancy ..
edit: My tank theory seems sound , here is test tank set up done by a university aerospace department -
http://elearning.eng.cu.edu.eg/aeros...gprojects&id=3
a tester testing in his tank