Paph. stonei (slow-growing)

[aerides]

I've had my Paph. stonei for four years. It's well established, good looking foliage, active roots visible through translucent pot. It seems to be growing happily but at a galacial pace. It took forever to establish itself after repotting.
It's finally spiking, or at least it's making a stab at spiking. Too early to get too excited.
I was orchid web-surfing a couple of days ago and ran across a vendor (they've been around for a fairly long time) who remarked that stonei is a specifically "hot" grower. Not warm, but Hot. So I'm thinking that's the issue with mine. My conditions are warm/intermediate, as typical, I suppose, for most homes in eastern temperate regions of the US.
With my AC, the temp in the room is around 75 in summer. Thinking about running the little space heater in there. I won't let it go much above 80 but that could help. Orchid growers - space heaters in summertime.

Make sense?

Thank you.