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when it is a simple drip
The COR is a variable speed
The World’s Most Popular Reef LEDs
SINGLE ARM RMS
The bottom sensor
NEPTUNE SYSTEMS LAB GRADE DISSOLVED OXYGEN PROBE PRBDO DŌS when it is a simpleLab 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
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