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![]() I need to order some bulbs for my new T5 fixture and I was wondering what the visual difference in light was between the 15K and the 17.5K Duo T5 bulbs. Reason why I ask is the Duo has been rated as having a higher PAR value over the 15K bulb (334 for Duo, 320 for 15K as tested by TheGrimReefer). If anyone has used these bulbs before, any advice would be appreciated so I don't end up purchasing more bulbs than necessary just to try out different combos. Thanks.
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