May seem like a dumb question but I'm a bit cautious. Any opinions on what sort of soap I should use to wash my hands and arms before I reach into my tank? I am an auto technician so my hands and arms are always filthy at the end of the day and water alone won't take grease off. I have been using go-jo to remove all the dirt grease and then regular hand soap and scrub real good after the soap is washed off the make sure there is none remaining. Is this a safe practice? I try to stay out of my tank as much as possible, but its inevitable sooner or later I have to do something in my tank. Thanks all.