I have read here that deep domes cause the bulbs/che to overheat and burn out quickly so I haven't used them just in case. I use a wide dome for all my lights/heat (about 11 inches diameter) MVBs are quite sensitive too any knocks when they are hot could be the end of it. If you switch them off they won't come straight back on but take about 10mins to cool - I thought I had broken mine the first time that happened but its just the way they are. The clamps have also been known to fail and cause fires so it is recommended that they are hung from a stand or bar across the enclosure so the heat is directed to a wider area.Ok I have the clamp lamp dome rated to 100w. Do I need a deep dome for the mvb?