Ive only had a BP for a month now. I used reptibark for the first month. I had to mist the tank multiple times a day to keep humidity between 50-70. I just changed the sub straight a few days ago to reptichip(coco husk). The humidity started right around 80 and its been tapering down over the past few days. Today(2 or 3 days later) was the first day I sprayed it down because it finally got down to low 50s. So, I am liking the reptichip so far! Its kind of a pain to get out of its brick form, but other than that, I am a fan.