I have read a post from Oct/Nov 02 regarding calcium and that there are sufficent levels provided in the salt for an octopus. However, I was wondering if anyone else has any views on this. As I was reading from an article in the Fins website last night, were it was spoken of inverts requiring calcium i.e. shrimps to renew their shells etc. but octo's individually were not mentioned in this section. Obviously octo's are soft with the solid part only being the beak, so this may explain the small amount required. But people dont refer to any calcium parameters they keep in their setups. Does anybody keeping just an octopus keep an eye on their calcium parameters etc?