H.A.F.
a.k.a. Rusty Nails
I have a little squirt bottle with some eggshell/vinegar water-soluble calcium and if I'm in a hurry I'll just squirt a little in the bucket of water. I think it may be for me more than the plant, but it falls into that "cant hurt" category right?I’m sure it’s totally fine if your soil is in great shape. I think it only reallly becomes more of an issue when your soil is getting depleted. I only do it as a precautionary measure. It’s cheap and I can usually see the difference in my plants when I don’t use it, but I may not see that difference if I amended my soil differently.