Any sort of phytoplankton will be beneficial for corals. But don't overdo it, some don't need supplemental feeding and you'll just be adding more nutrients to your water.
About once a week,I'll give my tank a shot DTs phytoplankton.Usually give my goni a squirt of cyclops or rotifers about every 3 or 4 days when I feed my fish.
About once a week,I'll give my tank a shot DTs phytoplankton.Usually give my goni a squirt of cyclops or rotifers about every 3 or 4 days when I feed my fish.