I've run a 250W Radium and a 400W Radium side by side on my prop tanks. Both were run on electronic ballasts. The 250W Radium was much bluer, and had very low intensity to the human eye. I wouldn't run the 250's on an SPS tank unless it was to supplement something else like a 10,000K bulb or an Iwasaki.
1 - 7 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.