Originally Posted by
danotaylor
Looks fine to me as well mate. What is your pH out of the tap? If you have >0.4 swing I would encourage you to age & heat your water for your wc's. Discus are usually very social and up at the front of the glass when they see you. The hiding behavior you're noticing could be stress related to pH fluctuations. Do you get micro bubbles on the glass after wc's? Test your source water, aerate some in a bucket overnight and test again. If the variation is >0.4 in either direction you should get an aging barrel going to help keep things more stable.