Are pots with holes better for phals?

[cneos]

Most orchids are epiphytes or lithophytes, growing on trees or rocks. Teretes and semi teretes are not what I'd consider 'dirt' plants. I've killed more plants by drowning them - a simple way to avoid overwatering is that the pots all have drainage holes. If you area is dry and you need to retain moisture, use plastic pots with holes instead of (unglazed) clay pots.

Genera like Disa and some phrags that appear to be growing in water aren't really submerged. Rather they are in a spongy material that is naturally wet by the rise and fall of a stream, etc.

Unless you're growing hydroponically, I'd be hesitant about recommending holeless pots.

[Royal]

Steve, Did you mean no drainage hole at all, or just no slits in the sides like "orchid" pots? You can use a regular ceramic pot with a hole at the bottom even if it doesn't have slits. But ALL of your pots need drainage.

First Ray's (check the vendor feedback forum) has several sizes of clear plastic pots with slits. They are a good shape and have more holes than any pot I've seen. While you're ordering form Ray, pick up a semi-hydroponic kit and a few plants.