Same here Camille. I think I'll continue with using them for my phals. My other orchids don't benefit from bottom heat ( dendrobium and oncidiums)

---------- Post added at 04:22 PM ---------- Previous post was at 04:18 PM ----------

Hmmm. At least I don't THINK they do.Now that I brought it up, I've just guessed that they don't, but I could well be wrong...?

The metabolic rate of a plant is directly related to temperature.

When you repot a plant, put it on a heat mat and the roots will grow faster.