My name is Salman, I want to set up a saltwater tank using a sump. I know a good amount and was wondering if I am missing anything. I am going to add a hang on the back filter that creates agitation (Should be plenty oxygen), a heater, circulation pump to the sump, a skimmer. All this for a 40 gallon tank. Excluding salt water and rocks/sand/coral. Also, would 40 be too small if I want to raise a pair of clownfish. Also, any tips on breeding. I would like to get in on that. Also, any tips in general would be appreciated.