Double Junction pH Probe

Keeping pH stable is critically important to healthy coral in a reef aquarium. A stable pH is also less stressful for all the aquarium’s inhabitants.

Monitoring pH not only allows you to tune in desirable parameter stability but also serves as an important warning system to warn you of negative chemistry changes.

Replace your pH probe or add another for another tank, calcium reactor, etc.

Buy this probe if you are:

Replacing a worn out pH probe (we recommend you replace your pH probe every 18 months).

Adding another tank to your system and purchased a PM1 to do so.