Answer
May 09, 2019 - 12:00 AM
The SJ55 has a different control module, so you would need the cell and its controls. It does have a much higher chlorine output. I would recommend to check out page 6 of this guide first https://www.circupool.com/assets/doc/CircuPool-SJ-Troubleshooting-Guide.pdf, then call support if you want to upgrade the system.
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