You need to give the Corid in the water. The drench is only given extra for a boost. If you have only been giving the drench, that is not enough Corid. I would start over giving the 2 tsp per gallon in the water for 5-7 days.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.