over the past oh month or so my green star polups have been falling apart and been trying to figure out y. ph is 8.2, alkalinity is 3.1 meq, dkh is 9, my lfs told me to check my treatments for iodine and came to find out one of them i've been using does have iodine in it and have stopped using it. There are 2 others i been using but can't find out if they have iodine or not and they are kent purple tech and kent strontium & molybdenum. anyone know if those containe iodine? and what else could be causeing the polups to die off? my mushrooms, kenya trees, and button polups are doing just fine. any info would be greatly appreciated