I unfortunately ended up losing the pair of them. Not sure what it was, they both passed at separate times. I was absolutely gutted, the male has to be one of the most stunning fish I’ve kept. Never seen any for sale since.
They seemed to be pretty hardy and didn’t need either super soft or really warm water to spawn. The female had plenty of spawns she managed to raise to free swimming in the community tank. I can’t really remember the exact parameters but I recon tds was somewhere between 100-120 at the time. Temperature was around 26 degrees. The female would go pretty hard on the male once she spawned and would protect the spawn pretty much by herself. She was tiny fish but would manage to keep the whole community of fish out of her two foot section of the tank.
Good luck with them, they’re a great species and in my opinion one of the most beautiful apistos.