Moser
Active member
What is the Par on the 10k bulbs you are using vs the Radiums? I haven't switched yet from 400s to 250s but I don't expect any problems since the Par will be lower. Right now I don't have any SPS in my main tank. All my frags are in my frag tank and under a 400w Radium and I plan to keep the 400w bulb over my frag tank permanently to promote quicker growth.
I have to be honest, I don't know the PAR difference. I assumed the 10k would be higher. I wasn't sure if the spectrum shift may be too much for the corals.
I don't think you will have probs with 250w. I had 250w over 30" depth previously, without issue.
I'm just hoping that 9x 400w bulbs isn't too much and I don't need a mix of spectrum....
Will you run all Radiums?. What about led as a real challenge??
Thanks
Mo