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SYSTEM REACTOR FOR FILTER MEDIA
and only if
Magnesium has another important function since in fact makes maintaining the correct combination of calcium concentration and alkalinity or carbonate hardness possible
or if you want to have multiple units without a rail running across your tank
LPH GPH (Inlet) (Outlet) VarioS 2 DC24V Both 25 4 13
NEPTUNE SYSTEMS LAB GRADE DISSOLVED OXYGEN PROBE PRBDO Aqua Ultraviolet SYSTEM REACTOR FOR FILTER MEDIALab Grade Dissolved Oxygen Probe for Neptune PM3 Module. The price of the probe isn't all that cheap compared to the traditional probes we use in this hobby, but this probe can easily last you a lifetime because the actual sensing membrane is replaceable. About every 3 months you will need to replace the membrane within the probe, which can be done in a matter of minutes and is very economical. After replacing the membrane the probe will function as
