That is the best way look at the lighting scenario. I did the same thing. Even though my tank is a FOWLR
right now with 1 Anemone, I may plan to add things in there later that I didn't want to explain to the wife later how I need more lighting. Since you have a 4 foot tank, I would recommend 2 MH
250w retros (covers 2 feet each). I also run my 4x65w pc
with them, but I really only use the actinic for simulating dawn to dusk. note: These bad boys get hot, so cooling fans will be in order. In addition, you will want to mount the retros about 9-12 inches off the water for safety reasons. Trust me on this one!
I bought my 250w MH
lights for $180 each, which included shipping. Most people have their own opinions on lighting, but I prefer the 14K as it is in the middle of the spectrum. 10K to me offers too much white/yellow, I haven't tried the 20K, but I hear it has a great hue of blue. Some people use the 10K and supplement with VHO
. To save money, I personally would get the 14K or 20K so you won't have to supplement. This will be less costly later with maintenance. HTH