Hi Everyone, We have had our Balinese octopus for less than a week, and he inked when we moved him from his favorite hiding spot in the tank. Please advise if this is dangerous for him to do, and what is the chemical composition of the ink? Does it cause the tank to become unbalanced with regard to pH, nitrites and ammonia levels? I noticed the levels had risen a bit since he was put in the tank last Friday. We put 5 glass shrimp in there last night before we went to bed so the lights in the room would be turned off for his sense of privacy, and this morning when we arose, he was sitting by the front glass of the tank exploring his new home. Thanks for the help, S.L.