Solution to ventilation in orchid basin

100-120 drilled plastic bottles of mineral water with iron cones, the more holes, the more aerated, but not with fire, because black drilling with fire will cause pollution. After the hole is drilled, it is cut into two pieces, the upper section is cut with the bottle cap, and the lower section is flipped and placed in the orchid basin drain hole (suitable for medium and large orchid basins). The largest orchid basin requires the whole mineral water bottle, cut off the bottom and put it in the orchid basin drain hole, and then put a layer of filter materials such as charcoal, hard plastic foam and bricks around the mineral water bottle, and then you can plant it. According to several years of practice, using mineral water bottles is indeed the most ideal way to solve the problem of ventilation in orchid pots. Please Lanyou might as well have a try. (Su Lan)