Metal halide light question

[guri]

Wanna set 10g frag tank have 100w metal halide light
it is to much for 10g tank how can I dim it what kind of screen I have to use?
Thanks

 

[tomtoothdoc]

that's a lot of light for a 10 gal. i think there will be a lot of heat from the halide. try raising the height w/ a hanging kit, use lighting grid (not sure how long it would withstand the heat before melting under the halide) and fans or a/c to help cool it down.

or post for a trade for a t5's fixture. much less heat.
i have this http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+3733+13822+19759&pcatid=19759
24" double(48 watts) on a 10 gal. frag tank (it's a little long but i just rest the fixture on top and it's fine) and that's plenty of light for my favia's, acans, and chalices.
never kept acro frags in there though.