Actinic

I have 72" bowfront and am planning on retrofit lighting. i'm going to go with 400 watt SPS 14000K MH's (x3). My question is, how man actinics will I need for this setup?

 

Your going to put (3) 400w MH's on a 72g???? WOW Are you planning on cooking your creatures? I think thats WAY too much. IMO

 

I agree with Luna that seems like a great deal of overkill in the light dept. However that wasn't your question. It it were me I think 4x65 PC Actinics should do the job, tho some may see that as even more overkill considering your daylights

 

ummm with 14000ks you might need 1 or two t5s. and yea 4X400watt halides is really overkill. go with 250s man...for the fishes sake.

 

that is my error the tank is 175 gal and 72" long ... Or would I even need actinics if I would use 14000k or 20000k bulbs?

 

much better and that would be great, halides that is... for actinic i would get 4-6 or more 72" t5 actinics. they get most output per watt and take much less space than compacts.