Originally Posted by Tikibirds
Is the water 84 or is the room temp 84? Normally water is a few degrees cooler then air temp.
Are you sure? I have a wall clock with thermometer that usually always reads 78 degrees. My fish tanks are also all right on 78 degrees. My heaters are all set to 75 as they are only for a "just-in-case" scenario. I'm having trouble understanding the science behind the concept, "aquariums are always slightly lower temps than the room." In practice for me it isn't true. Maybe this could be true if the tanks were uncovered and had air blowing across the top like from a ceiling fan? My tanks are all closed, especially after an incident with my youngest female betta doing a Olympic jump and dive out of the tank 5 feet down into an empty hard plastic bucket! (She survived and is a healthy girl still!)