I don't know if angels can exist with neons or not (I guess you'll find out) but there's no problem keeping 2 angels in a 30g, even full grown.
How do you figure that? A 30 gallon tank is 36x12x16, that's only 16" high. You figure the fish should take up all the space from top to bottom? Angels swim in the middle layer, so there really does need to be a middle layer. You won't have one in a tank that shallow and a full grown angel.beatle said:I don't know if angels can exist with neons or not (I guess you'll find out) but there's no problem keeping 2 angels in a 30g, even full grown.