Your silvers are small and have soft pallets, continue feeding the blood worms 4-5x daily. Always put the food in the same spot, preferably were current is low, the aro will learn to find the food there. In about a month(4") start crumbling the food stick and feeding along with the FDBWs. Gradually increase the size of crumbles and reduce the amount of FDBWs. Once the aro are fully eating the food sticks you can reduce feedings to 2-3x daily.
Make sure that your tank top is sealed tight, arowana have a way of finding there way out of the tank and onto the floor. As they get bigger you will also have to weight the tank top.
Isn't that over feeding?
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