Protein skimmers and filters.
I currently have a 40 gallon saltwater tank. I want to eventually have a decent amount of fish and move up in tank size to at least a 75 gallon if thatís big enough for triggers and puffers and tangs. Do you believe 75 gallon is enough? And For filtration do I need to have a protein skimmer or can I use those underwater Fluval U filters or something else in place of a protein skimmer, along with my canister filter thatís 360gph. Just looking to save $.