Thanks Hanzrobo and Ron for feedback, It was well worth the time and energy to get to this point and see a real difference in plants. I remember reading that the offspring may have very subtle to no change from the parent plants so this is a real treat. I wonder if it has anything to do with the fact that the red cactus or mom is a very old plant. I will have to look up info on "sports" now. Thanks again, it is hard to find info on this stage of bringing up the babies.

Mine do best at the office, as they get light and dark in pretty even portions, whereas at home they get light all day and then more light when we get home and turn on the lights. Mine bloom at work right around Thanksgiving, I am convinced it's the light. If you would like to see a truly amazing zygocactus-like bloom, check this out. It's a Night-blooming Cereus. Each bloom opens in the dark and stays open for a few hours, and that's it. Smells like heaven. The foliage looks almost exactly like a zygocactus, and the plant is just as easy to start.

Turning red suggests heat and/or water stress. The plant may have lost its roots through overwatering; tip it out of the pot to see if it has any. If not then you will need to reroot it. Check your potting mix to ensure that it drains freely and does not stay wet for a long time. The mix should contain components such as charcoal or vermiculite that act as reservoirs of moisture without excluding air from the root zone. (Some growers use kitty litter, the heat treated clay variety, for this purpose).

Let them flower and then do the dirty!! I have repotted and chopped, but the best results I saw came from old plants. Dead easy. Just take a piece at least 2 sections long, you can dry out a bit first, and then repot into pots or baskets. I have a broken bit from an old plant which is flowering away on the potting table. When it finishes I'll take cuttings. As long as you keep new ones it won't matter when the old ones die off. Mine wither and rot at the base.