t12

Hey guys, I've had this double T12 48" fixture for a while now. Seems like it may be a starter problem, but unlike most T8/T12 fixtures I have, the starters are not accessible from the underside. Only one bulb works at a time... from either the front or back endcaps.... The label says it is...

Does anyone have 2 - 36" T`12 freshwater, any kind of bulbs they could donate for the 150 Gallon at my school? One burnt out this week and the other is going bad. I'll be at the meeting on Saturday. Below: Pat and David donate Malawi Cichlids for the tank.