I already broke everything down and replaced the seal inside the tank. That’s why I was going to replace the actuators this week, too.
Having not received any good metal options from here, or from searching, I’ll probably just end up buying identical replacements to the originals.
But, yes. I stopped using the bricks because of the harm of the parts and seals within the tank water, on top of the corrosion to the actuators themselves.
Edit: went ahead and ordered duplicate replacements.
I mean, if it were to become a trend, I’m sure we might see some sort of results. (Hopefully this is within the spirit of the new ToS.)