You got it backward, Scott...
He's sending the discharge from the L/S to his tank, then dumping or pumping out his tank. That pretty much defeats the reason for installing a Lectra/San...'cuz once waste goes into a tank, it's no longer considered treated waste. Reason: although the L/S does reduce bacteria count to < 10/100 ml--even to -0- sometimes--only one of the li'l buggers has to survive to quickly multiply into zillions in the tank, especially in warm weather. So treating waste just to hold it to pump out or dump later is a waste of effort and power resources. That's why Raritan developed their "Hold 'n' Treat System"...which is a series of timers and relays that allows a tank to emptied via the Lectra/San. Notice that I said "emptied," not "dumped"...'cuz the L/S can only accept a max of 1 gal. at a time...so the system has to meter out a gallon, treat it...meter out another gallon...treat it...it's a time consuming process. You can read all about how the "Hold 'n' Treat" system works here: http://www.raritaneng.com/products/waste_treatment/index.html They show it as complete package including the tank, but it can be retrofitted to any existing holding tank and electric overboard discharge pump. Since Gil is in RI, which has state-wide "no discharge" but also has immediate access to open sea, he can't use his L/S as it's designed to be used (treat and discharge directly overboard) and doesn't need to treat at sea where he can discharge. So he'd really be better off putting a y-valve in his head discharge line so he can flush directly into the tank and save the wear and tear on his Lectra/San for when when he cruises into waters where he can use it...like LIS and the Chesapeake. Otoh, unless Gabe spends a lot of time in the Keys, a treatment device would be an ideal solution for him...'cuz, with the possible exception of a few misguided marinas, the Keys are the only "no discharge" waters with 500 miles of him.