Species Seedlings - mature - growth conditions

[Ray]

You will find that most phalaenopsis species are really "Hot Growers", growing best when nighttime temperatures go no lower than about 23°-29°C, and higher daytimes, with sufficient shade and humidity, of course.

Yes, they can tolerate lower, but if you're looking for optimal growth...

[OzPhal]

Good Morning Ray,

That 23oC is the night time temperature... it rises a little through the day although conditions haven't been overly warm over the last week to get the temperature much higher than about 27oC. The propagating tray is heated but not temperature controlled. At the moment all of the vents are closed to keep the humidity high for the recently deflasked seedlings that I have in there - there is also a small computer fan in there to allow air movement and reduce the likelihood of fungus in the high humidity/warm temp environment...

Originally Posted by Ray

You will find that most phalaenopsis species are really "Hot Growers", growing best when nighttime temperatures go no lower than about 23°-29°C, and higher daytimes, with sufficient shade and humidity, of course.

Yes, they can tolerate lower, but if you're looking for optimal growth...