I'm at day 6 on an 8 day chemo cream treatment for pre-cancerous sunspots on my head. I look like a vertical rummy nose tetra, but so far, it's manageable. It beats the alternative.
I shouldn't go into direct sunlight, and since I apply the cream myself, I can't risk getting any in the tanks. It's pretty toxic. I'm being careful not to spread it by mistake, so I'm neglecting my poor fish.
The fish have told me to warn you to wear sunscreen and hats. I figure this is from decades of baseball, then softball, as I'm not a suntan/beach guy, and tend to live the vampire life of a person with a fishroom. And I thought the biggest problem from too much sun was algae on the tank glass...