i have a 75ltr tank and allready have 3 neon tetras 3 glowlight tetras and 2 bristlenose and i was wondering if anyone could tell me about how many more fish i could have? i was looking at 2 pearl gouramis, 2 dwarf gouramis, 2 chocolate gouramis and 5 guppies. would this be too much and do i really need the bristlenose's in?