how do I acclimatize corals to new lights??

[X_Japan]

hello all,

just to ask, how am I suppose to acclimatise my corals to new lights??

they have been under FLs for so long already........

and I do not wish that they will bleach instead of colouring up after adding my MHs

[Achilles Tang]

MHs should be raised high up and gradually lowered to about 8 inches off the water. All this should be done over a 2 week period, I think.

[X_Japan]

WhAt?!

So long?!

my cannopy is fixed already

it is standard.......10 inches above the water surface

hmm........

because I am afraid that when I start to turn it on, All my corals will start to bleach instead of showing good colouration and growth

[pospeh]

What kind of corals do you have?

The softies are all pretty adaptable. Plus I don't think light shock is that huge of a problem even for hard corals.

Be that as it may, it is still a good idea to acclimatize the hard corals, just to be safe. . . . but I guess having a fix canopy kills that idea.

All I can think of is if you have more than one bulb coming, you might just try adding a single bulb at first.

[X_Japan]

I have only 1 iwasaki 250watt MH

together with 3 to 4 of my old FLs.........

So I am actually not too sure............

I keep mostly LPS and numerous softies

[Achilles Tang]

maybe you can shield your MH with perspex or something... cloth?

[X_Japan]

perspeX...

hmm......

ok...

can try ......

[Tanzy]

You can also try mesh or similar stuff that will partially block light. Iwasaki are super bright but I'll be more worried about the UV than visible light though. You can also decrease the photoperiod and slowly ramp it up to normal again with a daily increase of half to one hour depending on what type of corals.

Don't worry if the corals become bleached, given good conditions, they will recover within a week.

[X_Japan]

hmmm thanks AT, Tanzy

I will see how......

or is it possible to just on the new lights and let it be??

[Tanzy]

Sure! If your corals bleach or die, then you will just have to let it be.

[X_Japan]

hmm...............

ok thanks thanks

I will try to shade it as much as possible 1st then.......