Can definitely be done, but seems to come down to the fish. Some take to it much easier than others. Baby brine shrimp, ROE, and other small foods are your best bet to start. Once it starts taking these I would mix in something like LRS fish frenzy, then from there go to mysis or pellets. Try feeding multiple times a day, and make sure it has enough copepods in the meantime as it can take a while for them to catch on.