how long to run my 250 halides

[loy brown]

I just went from 150 watt to 250watt both were 14k and bleached a few corals.
So what I'm wonder is how long should I run them. The light is the coralife aqualight pro with the
Mounting legs. I was running 6 hours a day. I've just cut them back to 4 hours what you think?

 

[acrylic51]

That is a big jump....what I would suggest is cutting your lighting schedule back like you've started, but also try raising your lights higher up off the tank as well......You have to give your corals a chance to adjust to the new lighting.....Another trick is to use layers of netting/screen........start possibly with a couple layers, and every week pull a layer off to get the corals adjusted.....HTH