Hello! My name is Graham. I Just cleaned up a terrarium i had for a chameleon who has passed and i would like to turn it into a place for my orchids to thrive! I have read a lot of different ideas and it is kinda confusing! I am curious as to what is a good choice for the substrate, and i have bought 23 watt CFL bulbs in bright white and natural daylight. Which bulbs are a better choice and how many should i use? It is a 18x18x24 tank.