Most of these answers are general, some of these relate to our experience in growing Orchids may not be suitable for your conditions. Check with your local Orchid Nursery.

We fertilise weakly weekly. A good all purpose or Orchid fertiliser. There are two types a growing and a flowering, we put the growing on in the Spring when growth is starting and the Flowering mainly through the winter (if plants are flowering size) always fertilise on a Sunny Day.
This is called bud blast. Buds are very sensitive, environmental conditions can affect this eg. a burst of cold after a warm spell.

Vanda are epiphytes which means they grow with roots exposed and attached to trees. They like good Airflow around their roots and absorb moisture and nutrients from the air.

We have found this is the best way for us to grow them.

Generally we say move them into more light…once an Orchid has flowered they should continue to flower every year. Bloom Booster fertiliser may help.

There are different types of media depending on the type of Orchid.

Commonly used materials are lava rock, orchid bark, peat moss, perlite, spaghnum moss. Some Orchids like to be moist some like to dry out between waterings.

We say the finer roots finer media…All should be well drained.

Water in the morning so plant dries out through the day….to prevent fungus forming. Orchids such as Oncidium Alliance like to be just moist all the time some other varieties like to dry out between waterings. Do not overwater.

Very important to sterilise secateurs as you are moving from one plant to another as this prevents spread of disease and viruses.

This could be caused by either overwatering or not enough water. There may be also something sucking on the roots so good idea to pull it out of the pot and see what is going on.

Phalaenopsis planted in spaghnum moss probably only need watering once a week. If you have them in rock you will need to water more. Mist the leaves as well as they take in water from their leaves.