Tropicals & Tender Perennials: EpiForums, 3 by Gitagal

Gitagal wrote:
I have another Orchid cactus called a "Ric Rac" catus.
Not sure when I got it and from whom. It is humongous!!!!

Already gave the first "humongous" one away to an Arboretum. Now this one is approaching
5' in diameter, laid flat and must weigh close to 40lbs.

It has only bloomed once--and only with 2 flowers. That was back in 2006. Pic. 1&2.
Why won't it bloom again?

The picture of it in the house is from 2010. it is bigger now.

Question---What causes the Ric Rac (and Epis as well) to grow these ugly,
dry air roots when inside? Pic. #4 (this is from 2004 0r 2005).