I'm not sure if things changed but I thought sl2 was exclusive to elite controller, not lite. The salinity thing is a waste of money anyways, refractometer is like 1/3 the price of just the probe and you can use it anywhere you want.
do u think should i go with RKL L3 or maybe RKL L1 + SL2 +pH probe +salinity probe ?
i dont realy feel need in ORP monitoring.
RKL L3 comes with SL1 so how many probes can i connect? ,im looking to monitor ;
temperature
pH
salinity
all this is so confusing maybe neptun system is better?
all this is so confusing maybe neptun system is better?