My betta has a fungal infection and I’m about to dose her with sulfaplex. I’m doing a water change beforehand because I tested the ammonia and it was between 0-0.25 ppm, so I figured I would do a 20% change before I dosed her. So my question is can I use the QuickStart in the new water then dose her? And how much of the seachem do I need? It says to do 2-3 scoops per 10 gallons, and I have a 5.2, so should I just do 1 scoop? Thank you!