I might sound extremely stupid or ignorant, but I am a "beginner"...And if this the wrong forum I apologize. My tank has been cycled has run fine for 6 months now....36 Gallon Bow front with 5 albino cories and 4 gold dust mollies. This may not even be an issue, it might just be me being over concerned. However I noticed a surface change the past few days, I attached photos but to me the surface is almost complete covered with bubbles, and as I said this has only been the past couple days. Is there normal, I have of course my filter along with a bubbler, do I need to ditch the bubbler?