You are going about it the hard way. Why didn't you just move the Fluval from the 30g to the 60g? You could have cycled the second Fluval on the 60g with cycled filter. A few extra water changes and you would have been gold and your fish would be happy and less crowded. You could in theory still do this if you clean out the new Fluvals and the tank. Also I do not find there is any reason to cycle a tank as long as I do huge water changes daily. Tank cycles while the fish are in there. The water changes are the key.
Mishka