I want to finally buy a skimmer. Ive been running my tank without one for a little over 3 months now. Here are my specs: 65g main tank, 20g sump, light bioload but want to expand it, 1 goby, 1 wraisse, 1 blenny, assorted snails and hermits, 2 camel shrimp about 30lbs of live rock and roughly...