ATM Colony--any tips?

[animateash]

First time using ATM Colony. I've had a tank that has been very stubborn to cycle . Tried fishless/ammonia dosing, 3 different "instant" cycle products, and since none of that stuck I'm now cycling with two mollies in there. The dwarf seahorse expert who's been trying to help me get it up and running again instructed me to buy ATM Colony, as it is his "magic" product. The instructions list some water parameters, which are met as far as i know. Any tips for ensuring success, aside from following the instructions one can find on the back?
My seahorses are quite ready to get back home and stop living in the QT tank in my bathroom!