hi guys, ive recently added neons on my tank... yea i know i have just 1 angel cuz the 4 others died of disease. i think my last angel are ok now after i gave him some "anti-biotique". I am just thinking about adding more angel into it. what size of angel should i buy? same as the one in my tank? smaller? bigger? And also, should i add another kind of fish into before adding angel's? i am open to any sujestion . Tell me anything on decore,water,salt, everything for make it perfect!