Lectra/San is an excellent choice...
Problems with it rarely occur unless the device is incorrectly installed, operated, and/or maintained. I'm not sure what you mean by "Lectra/San/compact system"...but I'm guessing that you want to install the 5 gallon compact holding tank and dump it through the Lectra/San. Bad idea...The Lectra/San doesn't dump, it treats and discharges one flush at a time. Although it's possible to install it to dump a tank a through it, I don't recommend it...first, you can't just turn on the Lectra/San and let 'er rip...in order to completely treat the waste from the tank, you'd have to meter the flow from the tank run only about 1/2 -3/4 gallon at a time through it (because the Lectra/San is designed to treat a flush at time, and holds 1.75 gallons, each flush is actually treated several times before being forced out..so you'd have to meter the tank flow into it to do the same in order to treat the waste completely )..so it would take you close to an hour to dump even a 5 gallon tank--using 1.7 amp hours with each treatment cycle run. You can't use any chemicals in the holding tank--only enzymes or live bacteria treatments--because chemicals damage the electrodes in the Lectra/San. A Lectra/San can be discharged in all US waters except those designated "no discharge." So if you're in waters where you can use one, if you have only one toilet, your best option is both a Lectra/San and a holding tank for use in "no discharge" harbors and marinas, with a y-valve in the toilet discharge line that lets you choose whether to go through the Lectra/San or into the tank. If you have two heads, you can have only a Lectra/San on the most-used toilet and a holding tank on the other--and if you sail a lot offshore beyond 3 miles, you can have a y-valve in the line that goes to the Lectra/San that lets you choose between going through it or directly overboard.To understand how the Lectra/San works, go to the Raritan website at http://www.raritaneng.com All the specs are there, plus the complete installation, operation and maintenance guide. If you use it as it's designed to be used, I recommend it highly.