so i have had this guy for about 2 weeks now. for the first week i had him in the sand bed, and a few days ago i moved him rite to the top. i am running 2x250 MH for 6 hrs. water chem is good. kh at 10.5, cal at 460, mag at 1400, phos o, and the rest zero. i know a good deal about lps, but...