speaking of lights in water.... one day I had 2 double 4' 40W fixtures sitting on top of a 4' tank, my younger bro bumped into them sending both units(4x40W bulbs) into the tank fully submerged.... funny thing was that they stayed lit up under water for the 10 seconds that they were in there before my darwin award winning bro put his arm in the tank and pulled them out, weird thing was that he didnt even get a shock...???