Well it wasn't the alchohol, it was the aftermath of too many. I was gonna puke in the sink but a little splashed into the RO bucket...I scooped it out, and when I was hung over in the morning, my wife added some to the tank to top it off. I should have dumped that water...but I definitely wasn't thinkin straight, lol. I'm not even sure if this is whats causing anything or not, but it's definitely been on my mind since I had an ugly algae breakout in my refugium(not in the tank though) and I'm not sure if that would do anything with the po4 or not....Although I did do about a 10% pwc the other day and my po4 is now about .5