My tank is 3 months old. I want to add purple tech to start getting caroline algae.. But the bottle says it will raise calcium to the desired level... My API test kid is already telling me my calcium is over 580.. Much more than the test results even show... Do I still add purple tech? All other levels are neutral...or do I somehow need to lower calcium first? 150g with 50lbs of new cured rock. No caroline algae on rocks.. 3 small Kenya tree frags. That's it so far