just ordered a 1000+ bulk bag.
I would after lights being on for say 1hr turn the filter off let the tank flow settle, then feed the fish with their normal feed till their no longer interested, use a feeding ring if you have one although easy to make with bit of 6/4mm tubing, then skim any excess food from surface, filter back on then add the Daphnia 😉 But as in all matters its your call