I feed mine on hikari as well, a mixture of the wafers and pleco tablets work well they go crazy for it. I feed them bloodworm artemia, daphnia and they even like some spinach with the pleco's well. Don't rush them It took me just over 9 months to get them to a good siz and spawn them, patience is the key.
Make sure the eggs have a good flow of water over them and add a touch of treatment to prevent the fungus on the eggs, regular water changes too if they are going too be in small container, eggs take 4-7 days to hatch, depends on the temperature.