How high should I place a 150 w metal halide above my nano???

[Kennyboy1984]

Hi. I just picked up a coral life hang on mh. How high should I put it above my 24 nano?

 

[easye123]

i use to have that fixture..it was at about 8 1/2 inches and was workin good

 

[Kennyboy1984]

Ah thanks. That is about where mine is at right now.