No Eels No Tangs - go for a more tolerant fish like clowns, basselets, or damsels. You need to understand that your tank is only initially cycled this process builds not ends - it can take a year or two before your SW tank reaches maturity. Remember your building an eco-system this does not occur in several weeks or months to be truly successful have patients take - things slow - do it right the 1st time least you see your money flying out the door. LR + bacteria in a bottle do not change this fact.