I take care of tank #4 and #5. My team and I cut pieces of squid and feed it to the eels and the Pompano fish. We get a rag and spray vinegar spray bottle to clean the outside of the two tanks. We then clean the inside of the tanks with a sponge like thing. After that we get all the salt off of the top of the cage. Then we add more water to the fill line if it needs it. Then we are done.