Thanks Nemo,Keep it and set it up properly. It will out perform your DSB :yeahdude: and at least you can control it so that you have some nitrate available to your inhabitants.
Post a PIC or two of it anyway so that ID and pointers can be given. Not sure why PH probe and CO2 bottle is included with the nitratereductor though.
the CO2 and PH probe came with the calcium Reactor and the MV probe with the nitrate reductor!!! will post a pic for positive ID and some pointers. thanks for the help!