My HQI Light on my 29 Gallon JBJ Nano Tank is shuting down and than comes back on. I hear a "Clicking" or "cracking" sound each time it shuts off or comes back on. The light on the "Gear Box for the HID Light" stays on so I don't think its the unit. This is my first experience with HQI Lighting. Does this mean the bulb is failing? The bulb is 9 Months old. Thanks!