I wish I could help you but I use pure hydrogen peroxide 3% on them. Lay down paper towels in the sink and pull the stopper. Lay out the plants and pour the peroxide all over them. Then pull the stopper and lay the paper towels over the plants for 15-20 minutes. You can even squirt alittle more peroxide on the paper towels if you want. Then I put the plants straight in the tank, no rinsing.