Not ruffled. I missed the part that these tabs were specifically made for that company's specific feeder.

Still, if you EVER used Tri-Chlor in that feeder (I don't know if that's possible), my warning STILL holds.

Plus, ALL cal-hypo adds calcium. This is why I don't like auto-feeders, other than peristaltic pumps for liquid chlorine/bleach. The desire to capitalize on the auto-feeding leads you to badly over-stabilized or over-calcinated water.