i just started my 20 gallon tank have an aqua clear 60 on it a biocube protein skimmer my heater and also my power head and live rock and dead sand and pre mixed water the tank has been running for 2 weeks now and i just put 2 chromis in it and I'm letting the tank cycle does any one have ideas for fish and what fish i should add after put my two clown fish in the tank and does any one have any information they could provide me i will post some pictures later