Wattage for MH on a nano

[untamed]

I've got a 175Watt 10K over my 20 gallon Hex. The tank is nearly 20" deep and have no trouble keeping SPS or clams.

[psychedelic]

That's kewl. I finally picked up a 150W from Ocean Aquatics. I cannot believe I beared with PC's for that long. It really makes the tank look like a reef...the contrasts are just deeper...and the shimmer effect...that's priceless.