Here the time line.
Brand new QT:
10g, Aqueon 10g power filter, AquaClear 10g Powerheads, 2 pvc pipe, 50 watt blue color light
I placed the filter media to my DT (7 weeks old) two days before hand. On Saturday I added 5g of water from my DT and 5g of new water. I got a firefish the same day...