SPS GroFormula is designed to mimic the natural state of foods that corals and fish alike feed on in reefs. SPS GroFormula is an ultra-fine grain high protein coral food. Direct feeding and water column feeding were both tested by our Marine Biologists and showed equally great results. Water chemistry is one of the most important aspects to reef keeping and at Barrier Reef Labs is our main priority thus we must inform our community that powdered and fine foods can increase suspended nutrient. This formula can be used for all corals and particularly well for SPS corals.