Algae or ?

How big of a sample are you using for the FC test? If 10ml you multiply by 0.5, not 0.05, so you would have 4.5.

Gotta find out your CYA level and then do the SLAM :)
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.