I would not say MH
's are that much more expensive than other lights, it just depends on how you do it. You can get a retro kit and build and pendent or put one in a canopy very easily. I built a wooden canopy and added a 2x250 MH
with T5's. My tank is sealed in that respect so no glass top is needed. I have a peg board on the back so nothing can get out but hot air.
's can be used without actnics but you will need to get a bluer bulb(14k-20k) Some say coral growth will not be as fast but some say they see no difference.
The look of MH
's can't be beat IMO
but be prepared for heat issues if you seal it up in a canopy. Fans will be required.
I don't know much about anemones but I know people that have them with PC
lights. Keep in mind they may move alot though if they are not happy.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,