My male was in a 180g with several large CA's and was the only geo in there. I know it was very stressful for him but frankly I had no choice at the time but to house him in there. He held his own but did contract HITH quite a ways back. Even with the move to his present tank (a much more "sane" and peaceful setting), the HITH persists. He also has developed a few small white spots on or near his gill plates. I have not been treating it but am watching it closely. It doesn't seem to affect the fish behaviorally but it certainly is unsightly and can't feel very good.
Congrats on your 'orange heads' spawn.
"The only reason for time is so that everything doesn't happen at once"