Good results watering with hot water.
 

I have been watering my orchids with hot water only from the sink and about once every two weeks or when I can remember. This seems to be working for me. I have a dendrobium nobile ( bark, charcoal, perlite ), two cattleyas, brassavola nodosa, zygo, rych - peach) and oncidium sherry baby.

I have seen good results all except the cattleya Redland sunset

Just curious....why would you water with hot water instead of room temperature?

Define "hot".

Ditto what they said.

Anything above about 80°F is a waste of energy, and much hotter could be damaging to plant tissues.

Let's not forget that "temperature" and "heat" are not the same - I can hold a 1000° piece of foamed silica and not get burned, but a 200° cup of water will, due to the much higher heat capacity of water.

I am curious and confused.

Idea must be brought to you by the same people that say "water with three ice cubes".

I use warm water on mine but make sure its not too hot . I grow phals and it seems to be ok they seem to like it warm.

I know people who are absolutely convinced boiling water in ice trays freezes faster than room temperature water in ice trays.

Well the hotter something is in relation to the ambient temperature around it, the faster the rate of cooling, so............a little knowledge is a dangerous thing!

Um, not quite. Water at 99C would take longer to freeze than water at 80C. It's the The Mpemba Effect, named after Erasto Mpemba.

The water only needs to be warm enough so that the surface is kept liquid by convection, while the water freezes solid from the sides in and from the botttom up.



https://en.wikipedia.org/wiki/Mpemba_effect