Hello guest! Are you an Apistogramma enthusiast? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Apisto enthusiasts to meet online. Once you join you'll be able to post messages, upload pictures of your fish and tanks and have a great time with other Apisto enthusiasts. Sign up today!
As far as I know, spawning A. geisleri is not difficult. This species is endemic to Brazil not far from Santarem, where the water is soft and slightly acidic. You might keep your water at about 27 degrees C in a well planted aquarium with suitable breeding caves.
As for keeping your Apistos with Betta imbellis, I'd be concerned that they would try to eat the imbellis eggs before the male can get them into the bubble nest.