Haha yeah the putty work was done because it leaked. Very sloppy but...she doesn't leak now!
I'll pull the fitting apart tomorrow and see if it matches yours. Never heard of one putting water through the airline. Might try switching powerheads to see what happens.
Ooooo not quite sure. I'd give Red Sea a call and see if they have replacements available. If not, not sure if another one could be added or not (like not a Red Sea brand).