I would say running the light with just the 420nm spectrum on 24/7 wouldn't have any negative effects. Those led light should last you 5 years, the down side being once they burn out you will only have the whites to use....
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90g starphire cube/400mhRadium20k/2 XHO/2x27w UV/2x39w T5/ 3 Trulumen led strips
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