as long as you dont have any open wounds on your arm or hand, you can put your hand in the tank. Just make sure you wash your hands and arm well with tap water prior to doing so and dont use any soaps, just water to rinse off the salt from your skin. Scrup wash and dip in the tankSome aquarium books say wear gloves when putting hand in the tank (to plant plants)in case you have a cut on the hand/arm and get an infection.
Is this true and are rubber gloves ok?- difficult because water goes down them!