Who Gives A Fish Forums

My bristlenose is also coming up for air now and I'm having some issues with the diffuser, it's not working right, could that be contributing to the problem? And yeah, it was a german blue ram.

My ram cichlid passed away today. I noticed last night it was hanging out at the surface a lot, opening and closing its mouth repeatedly. Apart from that, everything seemed fine. Can someone please help me figure out what went wrong?