I have just bought a tropical Aqua One 620 tropical tank we left the wate to settle for a week before adding in 2 small angels, 2 silver sharks, 3 zebra dandios and one male fighter, I am looking at getting a group of 10 neons to finish the tank but will not do this for another week, is this enough time or should I wait longer before introducing new fish? 
When shall I be looking at dong my wter changes ans how regularly?  I have been told about buying algae eaters but am wondering how beneficial these may be?  are there any other suggestions for compatiable fish for this tank?  I am particularly after something with a bit of colour or that looks different the bigger zebra or maybe convicts?? 
 
Thanks