I did a water change of about 35 gallons today on my 150g tank, and came back to my office around 10pm, and turned on the room light (the halides has turned off already) and the I notice my niger triger was a very very odd colour and were acting very weird.
The niger trigger was swimming around very clumbsy and bumping into rocks, as was my clown.
My yellow tang is just riding along the bottom, and not hiding like they normally would when someone puts their hand in the tank or comes near.
I have seen the fish at night and they normally do not act like this.
All levels on the tank are normal - the only think I thought it might be is unfortunatley I haven't been able to setup my RO
system and I thought maybe something from the tap water could cause this?
Should I do another water change right away?