Duncan's puffed up like a balloon

[Kaboobie]

So I've been struggling with an algae issue slow steady progress now a bit if cyano issue but my question is this. Has anyone seen a duncan behave like this? It's been this way for a month or so now. I left it alone to see if it would settle down but no dice? Any ideas why it would balloon like this?

 

[tnewell]

That is bizarre, what are your tank params?

 

[Kaboobie]

Unfortunately I don't have any current data. I'm out of all my testing materials and am banned from aquarium purchases during holidays lol.ill have to get someone to test my water for me to get that. In the meantime if anyone has seen this behavior before I would appreciate you taking the time to weigh in.