Pc to MH bulb Q?

Ok so im putting a 250w MH in a fixed (cant change level) position over my 55gl it will be 12" over the water with a frag rack 6 " under that so a total of 14" to tops of corals.
I have some older bulbs that I assume to be around a year old.
or a newer bulb of approx 3mthswhich one would be the better choice to start out with?
I plan on running the light four just 4hrs a day untill the weather cools down a bit to this should help acclimatise the corals to considering they have been under just PC lighting.
ill post a pic soon of my getto hood & halide

 

Yr old MH bulbs shouldnt be reintalled in a light fixture. That may cause an algae bloom. Get rid of that bulb.


Luna

 

ok cool, I was leaning towards the newer buld but just had the second thought in the back of my mined, anyways I had just finnished my test run with the new bulb so ill just leave it their

 

the pic aint much but here ya go
its open faced to help with the heat.I have some supp lights aswell 50/50 act & marine glow.
will wait for a better pic this week.

 

I would use the new bulb.. and slowly over time set your light cycle longer to help the corals get used to the light...


Best of Luck....