I need a new E-14 fluorescent bulb of 9W for my aquarium since previous was 15W and got burned. People recommended to drill holes in aquarium's lid to allow convection but since former bulb was 15W, overheat probably caused it to burn.
Now i am considering if to buy bulb with 3-year warranty or without since the latter is cheaper. Do you think buying with 3-year warranty one would be better than without warranty for examining how it will work without drilling any holes first? The worst case is that bulb is burned and i got a replacement and know that i will need to drill holes for stable operation?