Great price but personally, I wouldn't want to have an LED light over my tank without a dimmer switch. Corals need time to adjust to LED's intensity. My main tank was a 60-70% for months before bumping up to full power, although mine is a DIY unit using 10w emitters. Still, if these 3w emitters are any good, they will be pretty intense for the corals and should be dimmed to begin with and slowly ramped up.
Anthony
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