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Hi Chris,
Without taking at least some basic measurements, we don't have the slightest idea of what the light field is like hitting our corals. Even the same brand of bulb but different individiual bulbs will produce slight differences. At the very least I think we need a spec. and a decent light meter to have any idea of what might be leading do differences due to lighting (so we can characterize spectrum and intensity).
Without just some very basic data, which we don't have, I really couldn't say....
Chris
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FSM
~ Touched by His noodly appendage ~
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