I'm a new orchid enthusiast and i've got some questions regarding fertilization:

I've got one retail store bought Phaelanopsis a Paph and a mounted dendrobium.

I'm currently using distilled water to water them, misting the mounted one daily, the other two every two days or so.

Should i change these habits?

Second, i want to purchase a fertilizer to help them along, which one would you guys recommend?

Thanks in advance,

Sam.