English person here, not if it was the same with you but lots of people over here tried the "led tubes" and failed, I read loads and seemed like the ballasts had to be of a certain age to run them.
Good to know. I just wonder if having the heat sink on the back(not that there is any other way) of the led tube's is forcing to much heat towards the ballast vs dispersing the heat evenly throughout on a t5 bulb. Looks like i'll be pulling those led tube's...uhhh, lesson learned. I wonder if you could combat this more powerful fans.



