Just because you have a 30" tank with 400w MH does not mean the Radion would not suit you, it has optics so the power is going to be very high. I will be amazed if it did not suit. You need to look at other aspects also
Brightness is not everything, spectrum is more important, Radion has a far greater spectrum range due to all the LED's being independantly adjustable.
How many have SPS on the sand bed? I would say the majority are placed between 75% and 25% of tank depth
The Radion is recommended at 8-10" but of course this is adjustable.
I ran two Ai's on my 24" deep cube, Ai's are 70w. I could only run them at 50% power. I think that statement in itself proves the overall power of optically driven LED's. The down side is on some units optics create spotting this was my pet hate of Ai, however Radion has used custom made in house optics that have shown absolute no spotting effect at all.
Last edited by Aqua-Digital; 09-30-2011 at 09:45 PM.
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