What do you think AB 10k or Rad 20k?

[Chris Lakies]

I'm planning on putting 2 175 watt 10k Ushio MH's and 2 400 watt either AB - 10k's or Rad - 20k's over my 120 gallon AGA.

Which 400 watt bulb do you think would be best? The Radiums are fairly cheep right now (around $75.00) and the Aqualine's are more expensive (around $100.00).

I'm looking to keep SPS, a few softies, and clams.

Thanks for the advise!

[Steve]

Depends on what you want. The corals I think grow slower under the Radiums. I have a 400 watt Radium over a 40 breeder. The colors are really nice, but the corals are growing slow and I was surprised that a 400 watt bulb wasn't brighter. I have 250w Iwasakis and I kind of wish I had the lights side by side to see which ones are brighter. Being that you have the two other 10K bulbs, I myself would probably go with the Radium so your corals have better colors.

[kevinpo]

I'm running a combo of 10,000K and 20,000K bulbs and really like them together.

HTH,
Kevin