Phal potted in a soil based mix, good or bad ?

[msaar]

Your phal is probably potted in what is actually known as a soilless mix, consisting of milled peat moss, vermiculite and/or perlite, and fertilizer. Most people who use these mixes usually add coarse perlite. They promote fast growth in seedling phals, but are problematic for adult phals. The most important thing in using these mixes is to repot at least once a year; after that they break down rapidly will damage roots.