I haven't done anything different and I noticed this today. I checked my params and my nitrates were a little high so I did a water change. What is wrong with it and will it be ok?
Also i have a green hairy mushroom that may have been sewed to a rock lol because when he is unhappy he drags that with him
Also never seen a bubble like that though. Should be fine though, i remember reading somewhere that you cant kill them unless you really really really mess up lol