Thanks!!! The video is definitely appreciated!
Ok, your guys do not appear very happy. I could see something on your one guys side but could not clearly tell what it is. Is it a sore? Fuzzy, red, pitted, anything specific you can tell will help! Beyond this, I could not see anything specifically on them beyond their behavior. Do they appear to have been dusted in sand? Or do they have a white film/fuzz anything specific can you can describe?
Ok, this is the most important thing here because I suspect the issue is mainly a water quality one. Do you have a decent liquid test kit for ammonia, nitrite, nitrate & ph? What do they read right now? What type of water conditioner do you use?