Just a little update on my situation as of this evening. I've still been feeding my fish the same way I normally do, with the exception of not giving them the occasional treat of freeze-dried blood worms a couple times per week any more, and I am not dosing any PO4 this week either. My PO4 levels went up to 3-4 ppm yesterday as I already posted, which really surprised me, but now I checked a few minutes ago and they are back down to barely 2.0 ppm, which makes me wonder if it actually was just the freeze-dried food that was making such a big difference. I will check again late tonight or tomorrow morning to see if it continues to drop or if it just keeps hovering around 2.0 ppm. In the past it has been hovering at around 2.0 ppm at the end of each week when I would do my water tests before I did a 50% PWC for the week, but that was back when I was still feeding them freeze-dried food 2-3 times per week and also dosing PO4, although the amount of PO4 I was dosing should not have given me that high of an amount by the end of the week. So until tomorrow!