Neptune Systems APEX Double Junction Lab Grade ORP Probe rare Replacing an old probe

Replacing an old probe

and all the necessary REEF-SPEC equipment needed for a stunning home reef:

OR PUT ONE ON YOUR PM2/PM3 MODULE FOR TEMPERATURE COMPENSATED READINGS

zoantharians

Allows for optimal feeding — small amounts many times a day

Neptune Systems APEX Double Junction Lab Grade ORP Probe rare Replacing an old probeORP PROBE Replace your ORP probe or add another for another tank Buy this probe if you are: Replacing a worn out ORP probe Adding another tank to your system and purchased a PM1 to do so. Double Junction probes will last longer about twice a long. A Single Junction Lab grade should be replaced in 12 months and a Double Junction Lab Grade should be replaced in 24 months.