How many feather duster?

[Diver4life]

Hello all. How many feather duster can I add to my 75 gals tank?
does marine snow is good to feed them?

 

[dendro982]

Which ones: Hawaiin giant ones (don't have them, can't help) or red-black small, with crown of the dime size (tens of this, only feed tank regularly)?

I didn't tried marine snow, check the label for protein content.
Variety of food will be good, like Golden Pearls, Oyster eggs, ZoPlan, for big one may be even Cyclop-eeze, rotifers, baby brine, cyclops, Faun Marin products.