Hi guys, a few month ago, I bought a reptisun 10 UVB bulb (24") for my exo terra 36x18x12"(lxwxh) from a reptile expo. After using it for a week, the light turned dull and flickered and show some slight burned mark at one end. I figured I bought a lemon and proceeded to put it back in its casing and I bought a new 36" reptisun 10 UVB HO with its own ballast from pet mountain. But this one will be used on a new national geographic 40 gal(36x18x18"). Now, after a month, my uncle took a look into the lemon bulb and found out the my hood was under powered and he changed the ballast and now that lemon bulb is burning bright like it was new. Question, can I trust that bulb is still good? Again, I really appreciate this site and everyone's help and thanks ahead of time!!