I have a hen who has been struggling with soft shells, no shells and what ever else that go wrong with shells. I have mistakenly given her calcium carb 600 with vit D3 instead of calcium citrate. She was doing fine but yesterday after laying a soft shelled egg that was crushed in the nesting box. No she is doing the whole head and tail down lethargic thing. Is there a calcium I can put in water I never see her eat oyster shell. I am kind of worried about her but don't know what else to do. Now I have made this mistake! I gave it every day for a week and then every other day for about a week and a half.