Angel Stocking Question

It's better to have a 29 gallon for angels. Here's why: the standard 30 gallon has enough volume but lacks the height of a 29. In a 29 gallon you could have 2 Angels like I do as you have the 30 gallon volume (yes I know it's really 29 gallons) plus the added height. I want to give you further advice on angels but knowing that you're tank isn't the right height I'm afraid of misleading you. If you really want a pair of angels is there any way you could sell the 30 and get a 29?
 
Prolly not the tank is 21 inches high does that matter? The tank is labeled as a 30 gallon tall but i guess it could be a 29 seeing as how it was given to me
 
cool but one by itself will be ok i was always under the impression you needed them in pairs
 
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