So now I've conditioned and attempted to spawn 2 different pairs... both without success! The copper dragon HM pair seemed like it was going to be a success; they were showing all the signs of being interested, but in the end after a few days of letting them interact, they never embraced. I have a feeling Neffy wasn't ready.. but I was unsure about the barring possibility, so I decided to try her out anyways.
Any tips?? I'm following all the advice previously posted... my first attempts are in a bare bottom tank, I have tons of hiding spots for the female, conditioned them for 2 weeks prior, introduced the female a day before releasing her (maybe more time in this step??), the males built bubble nests, the water is warm. Gah I'm just so confused lol. It'd be my luck though that all my pair are just not compatible haha.