i would go xm 10k. if down the road you want to go with a bluer bulb you could try a 14k or 20k bulb but the 10k is a white bulb with lots of par for a 175. if you could find the iwaski 14k 175 they are claiming it is almost as bright as a 250 and closer to a white bulb that blue if you want more light.
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Given sufficient thrust pigs will fly just fine.
90 Gallon LPS tank - Challice, Acans, Favia, Diplo and Zoos
125 Gallon SPS Coming Soon!
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