Good day. I've been using Quick Cure for 4 days now at half dosing in my tank. Found out my glass fish had ick for 2 days before I started treatment, so I'm treating the entire tank. At any rate, there is some resolution of the ick, but not complete. I was wondering if it is okay to go over the 5 day treatment stated on the label. I've never used this before, so any info would be welcome.