98% pure.
http://cgi.ebay.com/Calcium-Carbona...ertilizer_Soil_Amendments&hash=item27ab3cf14c
What's the verdict?
http://cgi.ebay.com/Calcium-Carbona...ertilizer_Soil_Amendments&hash=item27ab3cf14c
What's the verdict?
Elainea23 said:Strictly from a biochemistry major's point of view...
Uses of limestone include: Added to bread and cereals as a source of calcium, Calcium supplement for poultry (when ground up), and Medicines.
SO, humans consume it safely as a calcium supplement. However, I'm not a tortoise expert, so I wouldn't know how to extrapolate this and apply it to tortoises. But that seems like a really good price for 5 lbs of it... That would last a longggg time.