building new sump lets see your

[itsalifestyle]

working on getting idea I have a 75 gallon now pretty basic but thinking about making sump smaller adding another tank for refugium. I don't mind adding to water volume but I don't wanna take away from it either. I need to atleast pull sump out and do some work either way so figured why not add to system. now everyone can talk me out of it or share pics and thoughts. Space I have is 4 foot tall by 8 foot long and width is 2 foot also houses  reeflo external skimmer thanks