Why should you choose pots with the same drainage speed

The size of the orchid pot's structure, the thickness of the pot walls, the coarseness of the pot material as a whole, the size of the drainage holes at the bottom of the pot, and whether the pot bottom is made flat or sloped - all these various details make a great difference to how well water drains and air circulates in the pot. In order to harmonize the many orchid pots in an orchid room so that their drainage speed can be uniform and consistent, pots that are similar in size, thickness, coarseness, and shape must be used, so that when many orchid pots in the same room are watered at the same time, after the same interval, the dry state of each orchid pot will be entirely the same, or at least not differ too greatly. Because if the drainage of the various orchid pots in the room differs too greatly, then by watering the same amount every day, as time passes without our realizing it, the slowly draining ones will constantly hold water and rot their roots, while the quickly draining ones will often become too dry, leading to poor development. Waterlogged roots from standing water and poor growth from dryness are both major taboos in cultivation! (Wu Anlu)