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.
I used BRS for my Kent. Just ordered a bag of resin and a refillable canister -fit right in and it's even faster now. That made me nervous at first but TDS in is still 90+ and TDS out fell back to zero as soon as I changed them.