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 is rated for upto 360 gallons. I have been using it on approximately 300 gallons system for the last two years. I am upgrading since I have added more water volume.