There are at least four ways to reduce the amount of scaling at the hydrogen gas generation plate in saltwater chlorine generators. One is to have the Calcite Saturation Index (CSI) be more negative. The downside to that is that if it gets too negative then you risk dissolving plaster. Another way is to use 50 ppm Borates in the pool since this is a pH buffer that is particularly strong against having the pH rise so will effectively cut the amount of pH rise roughly in half in the SWCG. Another method, that is pretty much standard these days in SWCG systems, is to reverse polarity periodically since this largely reverses scale buildup. Another technique is to use a calcium sequestrant which is the topic of this thread. A calcium sequestrant effectively reduces the calcium concentration, but the calcium still shows up in a CH test so it is really lowering the CSI without your being able to know it. Depending on the sequestrant, it can also interfere with scale formation slowing the rate of formation down.

To me, using an SWCG that reverses polarity, using 50 ppm Borates, and targeting a slightly negative CSI (say -0.2) is a reasonable combination.