3.5" in diameter, WYSIWYG and fully conditioned to life in a reef aquarium! With glowing golden tips and deep purple branches, this hammer is smoking hot under full actinics! Hammer Corals can handle more light than most other LPS, that said, don't place in par over 175 or so as they can get burned. They also prefer an alternating low to medium-low flow. In regards to feeding, I would recommend target feeding it once a week with a high quality meaty frozen food to keep it fat, flowing and happy, lol.Lighting = Low Light at around 125 to 175 parFlow = Low to Medium Alternating FlowFeeding = Good Quality Frozen LPS Food 1x / weekly