Saturday Orchid chat and cores: A viewer's question answered

Hi All, Today we are having an orchid chat and chores. We are discussing a new product that I received through my orchid society, The Orchid Society of Western Australia. We are also going to answer a question asked by my viewer ‪@thewealthofnations4827‬ .
Growing Details:
Perth Western Australia
Climate: Mediterranean
en.wikipedia.o....
Home grower
Ducted Heat and Air Con
Humidifier
Growing Media:
Pumice
www.aquaponics....
Grow Lights
Full spectrum white light LED grow lights in either 10w strips or 80w bars
Water:
Under the sink R/O 5 stage filtration.