Light color

[Skylove0618]

I'm getting ready to rebuild my reef from my move and I need to change out my lights. I have a 175w 10k Hamilton MH and two 55w Hamilton actinic PCs. I'm thinking about going to the 12k XM MH and the daylight/actinic. Would this combo make a really noticable blue shift from what I have now? I haven't been able to find a picture of an XM so I have no clue.

Thanks

[Entropy]

I haven't seen 12k XM's. Only the 10k that rock, and the 15k are not so great (reportedly). I love my 10k XM's with VHO super actinics. If you want a good amount of blue, how about 14k Hamilton and PC actinics?

[razer]

what size tank is it? I agree with 10k but ushio I have better growth.what kind of mh ballast?