Keep your eyes open, move slow and pay attention. Tips to reduce your odds of getting stung: - When cleaning the tank, have a spotter who can let you know where the fish is at all time or if they can't see them at all. - Before you clean the tank, feed the fish well. Like men after a Thankgiving meal, they'll go lie down. - If you are cleaning the tank solo, don't get too wrapped up in what you are doing and take your eyes off the fish for too long. Think of it as driving. You mainly have your eyes on the road (fish) and periodically you look away to text or apply make-up (take your eyes off the fish to clean). - Again, if solo, don't turn your back to the fish. If the fish is on the right side of the tank and you are cleaning the left, use your left hand, not your right, which will position you with your back to the fish. If that doesn't make sense, try it, you'll see what I mean. - Make sure the fish is easily visible in your tank. (translation.... clean the glass first!!!!!). - Keep up on maintenance. Doing a little light maintenance a couple times a week is better than a monthly sweat and scrape. - Spot the fish BEFORE you start working in the tank. Some may think if they don't see them, they are ok. I grant you, that's when you'll get struck. - Note when the fish is less active and schedule your tank maintenance in that time frame. - Make sure the tank is an appropriate size for the fish. If you have a whale in a nano, there's not going to be much room for your hand, thus increasing your risk. - Use a scraper on a stick or a pick up stick.... thingy or a magfloat whenever possible. The less you are in there, the smaller the risk. - They can sting you even when they're dead. The venom lasts longer than you'll be able to handle the smell, so use prongs if you can. Depose of dead fish (RIP) in glass containers when possible to protect others. - Leave alone your tank when tanked. Seriously. If you wouldn't drive after a certain number, don't do tank maintenance after that number. - Know the warning signs that a fish has gone into a defensive posture. They will typically erect their dorsal spines and assume a head-down position, thus bringing their daggers to bear in the direction of the perceived threat. Don't be like those people in the horror movies that ignore when they hear "Get Out!" whispered in their ear. Be smart and get out. Smart reefers stay safe. Stupid behaviors result in stupid outcomes. *disclaimer: I do not advocate texting/applying makeup while driving*.