Should I Repot...Again?

[KCOrchid]

I'm a total newbie, and not sure what I'm doing wrong. I have three Phan's, two of them I purchased didn't have flowers or stems. One just has the stem, which is green and about 19 inches long. I purchased them at "Lowes" in June. They were 5.00 a piece, and I thought it would be a great way to learn about caring and growing them.

I'm not sure if I should be looking for branches to sprout from the other two, how long before the one with the branch will show growth, or what. I have them sitting on a heating pad, and they're misted every other day. They're sitting in front of my window that gets very little sun, but a decent portion of light.

Here's the description of the plants:
All three have two - three green leaves varying in length from 6 to 12 inches, and outside of what looks like something has been eating on one of them (the largest leaf, there is evidence about the size of a dime), all three of them are nice, green and seem strong.

I transplanted them into plastic pots about two months ago, following the directions of removing the old moss, setting the plant root into the pot and placing new moss around it - not packing too much or too tight. I thought I may have placed too much water, so I set them on a heating pad to speed up the drying, which I also heard made the roots happy too! A month ago, I watered it with "orchid food" and it's time to do it again.

I see people talking about 'clay pots.' Could this be what I need to do? Should I repot? There is one pot that smells a little 'mossy' if you know what I mean, but I've checked the roots of all three, and they don't look damaged.

KcOrchid