AndyNarwhal
Members
No problem!
The low profile T5's are not repairable. Just like any aquarium fixture they were never designed to be user serviceable beyond changing lamps. Having consumers repair fixtures on their own opens manufacturers up to liability issues that are far too risky for the manufacturer.
Heck if the fixture were to be UL listed you would technically need to use a trained technician just to change the light bulb.
Now I am not saying that you can't repair a lot of fixtures. HO T5 fixtures use conventional potted and boxed ballasts and anyone with a screwdriver can replace them. But we don't recommend it in order to protect us from litigation.
Fulham Pony ballasts are pretty good which is why we use them on the new Coralife Biocubes. But even they aren't perfect and will go bad every now and then.
Grounding is not an issue since the ballasts are not grounded. The fixtures themselves are grounded but this is to prevent an electrocution hazard in case the housing were to become energized through contact with an exposed wire. It has nothing to do with performance. Any fixture with a metal reflector or housing will have the metal components grounded for safety. That's a UL requirement but is also good practice regardless.
Josh, I know what you are saying about the bulbs being tight. Here is what I do. I turn the bulbs with my fingertips so that the pins are facing straight up and down. Then I flip the fixture upside down resting one end on the table top and holding the other in the air. With one hand underneath to catch the lamp, I tap the top of the fixture and the bulb will drop out. I hope that helps.
Andy