When i used to add my ag grade KCL i never got any murky water. Now that i add Gregwatson's k2so4 i get very milky water. Just like when i added sugar to my fishtank a while back. Has anyone else witnessed this problem? WHen i stop using it the cloudyness dissapates. I am worried about running out of K since my fish load is pretty full. 10Hets 5 otos 1 SAE 3 platies and 2 large female guppies.