Potassium Question

[spawn]

Are there any detrimental effects? The reason I'm asking is because I'm dosing a cap-ful of TA potassium a week, but I don't have a test kit so I'm wondering if it's worth it. I've got Great PE. as well, but my green Formosa looks a little weird, it's grown weird cup-like shapes around where some of the polyps come out and and sometimes makes slimy strands from these shapes. I was wondering if it may be caused by to much of something. Everything else is good.