It's been really hot recently, up to 36oC in the day and 31oC at night. After my H.javanica died eventually, I decided to build a orchid tank with cooling. It is a exo terra nano tall tank 20x20x30 cm. I replace the top cap with a acrylic plate to install the cooling module and led light. The cooling module is somewhat like to Y2K2 which is easily to buy online. Later on, a thermocontroler is connected and the led light(I built myself, the retailer said they are full spectrum)is fixed below. I tested my current setting, it can reach as low as 19oC (room temp. is 32oC). I set the temp. range at 22-26oC. The first and only resident is C. fesselii. I actually built these for it, I hope it can survive....it doesn't look good recently..