So I have a 60 gallon tank with 2 top mounted filters rated for 70 gallons each and my tank has been up and running for 6 months. I have 6-tger barbs, 3- green T barbs, 6 albino tigers, and 5 three stripe cory's. I would like to add a pair or a single cichlid! Is this possible are there any cichlids that would be ok with tiger barbs and would not overload my biofilter?