You may want to rethink your decision to add a GT. As they grow, I believe you will certainly encounter some (alot) of aggression issues. Be careful...some sev's tend to be more docile than your other tankmates....leaving them to be dominated by the FH and the GT as they get older. In my opinion, just a FH in a 75g is enough, unless you have a divider. Only my opinion, as I can only share my experience with you.
