How much liquid calcium supplement to fix soft shell issue?

Perfect! Covering today.

ANOTHER UPDATE:
Carolina was seemingly 'healed' after a round of cinnamon/ginger/lemon/baking soda concoction, hand watering to make sure she had enough liquid, and multi-daily crop massage. After we started the FF she improved drastically.,, to the point that she went from the biggest homebody to the most adventurous and mischevious. It's been that way since the FF introduction.

And then, last week, they flat out quit eating FF. (see my most recent post here) Just quit.
It was the last of the bag, so I tossed out the FF that I still had and started over. New food, new fermenting, they still won't touch it.
The food is good, date on bag is very recent. What gives?

This began about 2 weeks ago and I re-introduced the FF yesterday so they've been almost 2 weeks on dry pellets, no FF. Today Carolina is exhibiting most of the same symptoms she had when I originally started this thread. Her eggs are good though - even laid one this morning - but her crop is doughy and she's just hanging out in the coop when the rest of the girls are out free-ranging it.. I'm trying the cinnamon concoction again but we are leaving town for 4 days tomorrow. I won't be here to give her that or make sure she's treated like the ailing chicken that she is. I bought some scratch grains, thinking maybe they'd eat those fermented instead. But that won't happen immediately and I can't figure this out... why did they just quit eating the FF???

One of my Ammerucanas has a shell so thin that I had to begin to research what to do. I tried those big rocks (oyster shell) she HATES them, but when I pulverized them with a hammer she will do the powder. Few days later we are right back to thin shell. I called local vet to ask - he said thin shell = not a problem. NO SHELL is a VET Problem!!!

TheNeverEndingFlowerPot said:

One of my Ammerucanas has a shell so thin that I had to begin to research what to do. I tried those big rocks (oyster shell) she HATES them, but when I pulverized them with a hammer she will do the powder. Few days later we are right back to thin shell. I called local vet to ask - he said thin shell = not a problem. NO SHELL is a VET Problem!!!

Click to expand...

Mine will not eat the white pellet oyster shell... won’t touch it. BUT I found an oyster shell that actually LOOKS like crushed oyster shells... gray, not white, and shell-like (not pebble-like). They eat this stuff up!

https://www.amazon.com/gp/aw/d/B01C885W9K/ref=sxts_sxwds-bia_1?ie=UTF8&qid=1526612307&sr=1