| First of all, regardless of how you believe there is lots of light, there isn't enough for even a phalaenopsis (which is a low light plant) IF there are no windows. It doesn't want direct sunlight, but needs bright INDIRECT light from windows. YOU CAN grow phals under fluorescent lights (I do), but you need to have them inches from the bulbs - which unless you set up a fixture strictly for your plant(s) is not going to happen in an office environment. You can enjoy your plant while it blooms in this kind of setting, but don't expect it to flourish long term.
In general phals would prefer a pot too small than too big. Many (including myself) typically repot phals as soon as possible after acquisition, not because of the need to increase the pot size, but in order to inspect the root condition (and cleanup if/where necessary) throughout and change the media out to whatever we are most comfortable with. Phals can be transplanted at any time without serious effects - even when blooming. Lots of air roots is common for these plants - even right after or soon after repotting. In the natural these plants grow on trees and they are constantly sending out roots looking for places to attach themselves.
The quickest way to kill a phal is to over water (too often) and/or get water into the crown of the plant late in the day and rot the crown. What kind of media is your plant in and how often are you watering? Of course don't let it set in a pool of water either.  |