You have the right attitude for sure! Glad you are willing to do what's best for the cichlids. Though, in my experience, I have had better luck breeding cichlids with others of the grow-out group still in the tank. In the example I spoke about in that post, I eventually moved just the pair of panamensis to a 90 gallon where they were the only cichlids with some dithers. That is when the male turned on the female and killed her. I think that defending the fry from the other cichlids, and even just the presence of other cichlids in the tank, strengthens the pair's bond and keeps the male from seeing the female as an enemy. If I were you, I would get a group of 5 sajica, preferably from diff sources. Get them small and grow them out, let a pair form, and then keep all 5 in the 75. The pair will probably breed, and the other 3 will probably hide in the corners (put a lot of caves etc), but hopefully the male won't kill female. I have also bred cryptoheros/amatitlania species in smaller tanks alone (for example, pink convict pair in 30 gallon) and have pretty much always had the male eventually turn on the female, sometimes killing her if I did not notice fast enough to pull her.
That's just my .02, and somebody else might disagree. But this is what has worked best for me.
Hmm that’s interesting. You never had a 2nd paid form? I’d be worried that I’d get 2 pairs out of it, then have 1 left over to get bullied then have the two pairs battling for space. Guess I could always just see how it works out.

