[ozzy_200769]

I bought this set up used,

I have a coralife 3 - 175 watt fixture, I bought xm bulbs maybe 3 months ago, all 3 bulbs ignite and shut off, they were fine today,
I changed the actinics and now the halides won't run.
any ideas?

I don't want to lose all my coral. I cannot afford a new fixture

[malawiman]

you probobly already did this but remove hood, remove all bulbs and check for corrosion or burning. also move bulbs around to different slots or pos. if no help inspect wiring.

[jimw369]

Originally Posted by ozzy_200769

I bought this set up used,

I have a coralife 3 - 175 watt fixture, I bought xm bulbs maybe 3 months ago, all 3 bulbs ignite and shut off, they were fine today,
I changed the actinics and now the halides won't run.
any ideas?

I don't want to lose all my coral. I cannot afford a new fixture

Sounds like a ballast issue.

[ozzy_200769]

All 3 at once?

[thatguy559]

sounds like wires to me but tap the bulbs mine did that too. i just tapped them then they came on