Tank is 6 months old and constantly having issues with pH sitting at 7.8. Looking for recirculating Co2 Scrubber cap that fits a Red Sea Reefer DC 350 skimmer. It is the one with the wire and sensor that installs down the middle of the cap, used to auto level skimmate. Looking for something simple, possibly 3d printed if something like that exists. Any help would be great. This is my first post, so thanks in advance.