welcome to fishlore!!(if i havent already )
but any ammonia will cause a cloudyness and sometimes, you wont see the ammonia right away either ...what
test kit are you using and do you have a
nitrite/
nitrate reading yet? your tank is so new that the cloudyness is very normal and could off and on have a bacteria bloom up to a year old....id get some prime or amquel + and start with daily water changes until your cycle completes...also if you are running carbon in your filter, that needs to be changed out once a month so it doesnt leach the nasties back into the tank..once is absorbs a good amount of waste, about once a month it (3-4 weeks) needs to be changed or it leaches it all back in the tank .....if you dont run it, I would get some to run for a month to help with the cloudyness

as far as your fish babies, I wouldnt put anymore in there as each can reach over 12 inches long ...the bala's actually ram into tanks the bigger they get as they are very skittish and need that horizontal space to swim...good luck with everything and I hope it gets better!