| well with what you want to stock look more into the 75-100g range. That is an amazingly large bioload for such a small tank. The mandrin will also need lots of pods, more than a 29g will ever grow, so if you get one make sure it eats frozen. Stay away from the yellow tail damsel, from my experience they become large and aggressive. I also think putting an angel in a 29g may be asking for trouble...research the needs of each fish and keep in mind that for a reef aquarium a 29g is still small. | 
