just done a hoover,and water change,had to replace a fair bit of water(due to hoover taking loads out!)replacing water i do with a hose,but obviously its cold water going into a tropical tank,i added a jugful with stress coat aswell,and some hot water mixed in(in a corner where fish wernt,and mixed with hose,so no hotspots)
How do you do water changes in a large tank,and manage the water temp during??

took me 2 hours.And tank under normal temp now.