No, especially if the tank is tall. some people have two 250w bulbs over 40g breeders that they grow frags out of.... if you intend to keep SPS then i think you are good. I would be concerned about heat though....
A 250w Metal Halide has the correct penetration power for your tank. You will be able to keep most any coral as long as you have the right filtration and flow. What are the dimensions of your tank?
The tank is 25"D 20"W 18"L
CPR AquaFuge 2 Hang-on Refugium, Small
AquaC Remora Protein Skimmer with Maxi-Jet 1200 Pump
AquaC Remora Pre-skimmer
Taam Rio+ 1000 Powerhead
Ebo Jager 150 W Heater
20" Sunpod 1X250W 14K.
Got all the stuff from my NC in there today here are some pics.
Sorry about the pics are kind of big and turned out blue looking for some reason. I'm not the best photographer
Here's a couple pics of my old NC after everything was out