Chalices bouncing back to health

[pjdiddy]

Got these receding chalices for a good deal. What is the secret to bringing them back to their primes? Right now they are on the bottom and trying to feed them at least twice a week.

 

[Jseimo]

Got these receding chalices for a good deal. What is the secret to bringing them back to their primes? Right now they are on the bottom and trying to feed them at least twice a week.

Time and luck

 

[FactoryKTMmotocross46]

I've heard a lot of anecdotal to keep your Mg high.