Hey all, I have an Odyssea 48" fixture that I bought about 2 years ago. It runs 4 48" tubes that are not marked for size, but are slightly larger in diameter than a T-5. Also, they are 2-pin bulbs with the pin spacing the same as a T-8, but the bulbs are smaller than a T-8. I would guess they are about a T-6, but I can't find that size bulb ANYWHERE. My plants are starting to suffer from the lack of light. Can anyone tell me where I can find these bulbs???