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.