Mandi_1523
Aquarium Advice Newbie
Hi I have had my 120g tank running for around 5 months and all of a sudden our fish are skittish when ever there is movement around the tank. We do water changes every 2-3 week. The levels in the tank are perfect. There hasn't been any changes other then movement of decorations and plants with every water change. Anyone have any suggestions as to what may be causing them to act like this?