Advise on Lighting

[chriskessha]

I'm getting 2 x 250w Metal Halides for my 4x2x2 without canopy. 1 has dimmer and 1 does not.

I have a few questions.

1) How far from the tank must i place them?

2) What kinda blubs (colours) to use?

3) Lighting timing?

4) Do i need to use separate moonlights? If have to, what will the tming be like?

5) If use moonlight, what kind to use?

Would really love to know, soo that i don bleach my corals and blind my fishes.

[reef garden]

I have no experience with MH but I understand the heat is always an issue and bleaching occurs more commonly with it? Have you considered LED lights such as Maxspect?

[chriskessha]

Yes I have considered.. but mh seems to have better growth on clams and such