Not sure on the Phoenix bulbs there Josh, I know theyve gotten rave reviews but I havent seen one lit up in person. Theyre also in the price range of the Giesemann 13k, like 99 bucks I believe is what I saw them for at Premium. People are mostly using them for tanks where supplimental actinics are not used, I dunno, I still like the look of VHO actinics and 10K's. Aquatek has a Sunlight Suppply Maristar fixture with the Giesemann 13k's on an M-80 HQI dual with T5 actinics and its just perfect!



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