i have re-do my 20 gallon tank and i have a fluval 205 filter, 100watt heater , 2* 15 watt bulbs. i have 3 gold rams, 2 kribs, 1 pleco. i am intrested in getting a kight goby, cockatoo cichlid, german blue rams. i want so ideas for more fish in my tank, an idea ,plus any other cool dwarf cichlid or cichlid that can go in my tank. thankyou