Hello! I have a freshwater 35g I am looking to turn into a saltwater tank. I have a Fluval 407 canister filter and an average light. I am planning to buy a better light anyways. Is a canister filter set for a 75-100g enough or should I go with a sump? What else would I need to do to set up a 35g? Thinking of doing banggai Cardinalfish or some kind of community with clowns, dottybacks, etc. Thanks!