I repotted my TC using bagged orchid bark (mix of bark, perlite and charcoal) with a small of potting soil to bind (per suggestions given here). It had been potted in regular potting soil with a large amount of perlite. I used to water it when I noticed it looking "wilty" perhaps every other week or so. I am concerned that with the new "soil" it will not be holding water well enough to keep to that (irregular, I know) watering schedule but do not know how to figure out when to water. Cannot really put my finder down into the "soil" to check for dryness as there is very little "soil" and more small chunks of bark, perlite and charcoal. Have searched here for watering info and see that most people seem to water about once per week. Should I just start there and see how it goes? How will I know if it is not getting enough water (without killing it)?