If you like a very blue look running the 20K's would be good. You wouldnt need to run actinic supplimental lighting with those but you don't get near the PAR as you would running 10K halides with the VHO actinics. If you are just raising softies and LPS that isn't a big deal but for clams and SPS you would be better off at least stepping up to 14K lamps.



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