Hi everyone, just wanted to introduce myself, also looking for some basic do's and don'ts, i have just started out with a cold water tank, relatively small (3 fish maximum), my tank has just started to turn slightly discoloured with signs of algae after about 2 weeks, this is my first water change, i have filled a bowl with tap water and added a small amount of water conditioner and was going to let it reach room temperature before changing to water over. I was only going to change about 50% of the progi