I did not realize your tank was not cycled yet.
Let me reiterate what Pete said…. PLEASE DO NOT order your Pixies until your tank has cycled. As Pete said there is really no point in ordering 4 to 6 weeks early. If you place them in a tank that has not yet cycled you are pretty much dooming them to a death sentence and if that isn’t enough of a reason I can’t imagine you would want to throw away your money for seahorses that most likely will not survive.