How many Mh lights

[fishkid1000]

I plan to have an icecap retro kit with four bulbs. I want MH too. How many 175 watt MH fixtures should I get for a standard 80 gallon?

 

[brooklyn johnny]

Generally people go for one halide every two feet of tank. Most four foot tanks have two, but I have seen some sps tanks with more...

 

[yetex]

What kind of bulbs are you planning on using?

 

[fishkid1000]

I am thinking 10,000k -12,000k.

 

[jarre]

I would also like to add that the depth of the corals that need the light makes a difference too.
IMO if the corals are ?" deep,
18" or less then use 175's
18" to 24" use 250's
Greater than 24" use 400's