First of all though, a reminder to all to actually check that you received the right items. I ordered the 3 oz size of 12% strength. I received a 6 oz size of 6% strength. I guess it's a wash?

Should I follow the directions on the back, or am I supposed to double everything since it's the 6%? Right now their medicated water is per the directions for the higher dose (suggested 5x, I mixed 4x) for the 1st three days. Hope that made sense.
Also, does the medication stay suspended in their water for a long while for twice daily water changes, or should I change out their medicated water more frequently?