Question about t5 fixtures.

[KSReefing]

I've been using the aquatic life retrofit kit for over a year and have had no problems. I run ati bulbs with them to supplement my leds. Just another option . Paid $50 for a 4 bulb retrofit kit.

 

[Christopher Davis]

Understandable, well just put that out of your head! As long as the fixture is rated for the bulbs it doesn't matter what bulb you buy. 10k is just the spectrum the bulb is emitting which is more of a daylight bulb white.