Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
It does seem to help. BRS did a very interesting video on it recently if you want to check it out. I typically use it for helping a damaged coral, but it does seem to help as a dosed supplement as well.