The biggest difference is particle size between Reef Roids and Coral Frenzy. If I were to feed only one it would be Coral Frenzy as the particle size range is huge from 53-1700 microns. Even small fish will eat Coral Frenzy. Where Reef Roids particle size is limited to only 150-200 microns.
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~ Mindy
SPS fanatic.
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