I have a small 20 gallon tank and I'm so confused I read a lot on here of these huge tanks but read in other places to have 1 cichlid per 2 square inches of tank. Which is best I currently have 4 cichlids: 1 earth eater, 2 zebra striped black and grays(peacock I think) and 1 silver and gray striped one with yellow tip fins and blueish head...along with a Chinese Algea Eater. Am I making a mistake or should I go with more? This is my first tank my dimensions are 24 in wide x 16 in deep x 12 in out. Please let me know if I'm making a mistake I Love my Cichlids...