I just meant that an inch sounded a bit much. I beleave you that it is bulgeing, mine did as well. if you just added the water a week ago I dont think it would have fouled enought to cause it that fast. these things take a bit longer than that to become obvious and if it is as cloudy as that picture something has been wrong for a bit now.

Im sending you a pm now with a bit of info on how I have treated them in the past.