Response to Hello Mary - That is correct, in a way. You would screw the cell onto the stand. You would then pour a mixture of water and acid. A ratio of 3 parts water and 1 part acid is the best to start. You would then let site for about 10 - 15 minutes, pour out the mixture and unscrew and spray out with a garden hose. If you click HERE , you can see a video detailing the process.

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