lighting for 220 gal tank?

Hello;

I have a 125g reef right now with 3 x 250w iwasaki MH, 2 x 160w VHO 10k
and 2x 160w vho actinic. I'm thinking of going up to 220. I have a couple of
clams doing well in the present setup as well as a variety of soft and sps
corals. Am wondering if I substituted 400 wat MH's with the same setup if that
wold be suficient?

thanks

Bob

[Mort]

AFAIK, A MH light is meant to cover a 2x2 area so you should have a
fixture/reflector every two feet. I'm pretty sure a 220 is eight feet long
no? If that's the case, you should have 4 lights.

hth


~Mort

> wrote in message
...
>
> Hello;
>
> I have a 125g reef right now with 3 x 250w iwasaki MH, 2 x 160w VHO
10k
> and 2x 160w vho actinic. I'm thinking of going up to 220. I have a couple
of
> clams doing well in the present setup as well as a variety of soft and sps
> corals. Am wondering if I substituted 400 wat MH's with the same setup if
that
> wold be suficient?
>
> thanks
>
> Bob
>