So i just upgraded from a 55 to 75, a friend of a friend gave me a 75 with stand for free , and was just wondering how many more fish i can add. Its a reef tank and im pretty sure i overloaded my 55 gallon n e way. I have a Yellow tang, bi color blenny, 2 clowns, scooter blenny, purple psedochromis and six line wrasse. I want to add a saddle valntini puffer if i can but the more i think prlly not, or flame angel and/or blue reef chromis (do they have to be in school cause i just want one) or bangai cardinal, or maybe a fairy wrasse. BTW its 75 gallons with no sump, not yet n e way. I have a fluval 405 with crushed coral and carbon but not sure if i want to use it yet. I know its a lot of question but any help would be app.