In the mid 90's, I purchased some Phaleonopsis from somewhere I don't remember...and some Phrag's from Joe Kunisch at Bloomfield Orchids. I bought a Caudatum, a Grande and a Sorcerer's Apprentice. Also paid a high price for a Sanderianium seedling that didn't make it. These were the first orchids I purchased. With the Phrag's I just went with, " You can't overwater them"!
As a windowsill grower, February and March, days are getting longer and the sun more intense...all of the Phrag's many divisions later, BLOOMED, amazingly to me.
Caudatums are more susceptible to rot, especially after dividing and repotting. Leaf tips of all, turn brown on some, and others, not so much. If you are having trouble getting them to bloom, more light and cooler nights, around February and they bloom dependably. In fact, I have tried to let plants go, not divide for a couple seasons and get a specimen plant with many blooming plants, a one year old plant blooms. So, I will have plant with mature bloomed out growths. If you let, Sorcerer's Apprentice go, you will get a BIG plant with sequentially blooming spikes, blooming for months. Because of Phrag's and this forum, I have purchased quite a few different Paph seedlings in the last 2 years, time will tell if they are as easy as Phrag's. Duck