Neptune Systems Double Junction pH ProbeNeptune Systems Apex Lab Grade Double Junction pH ProbeNeptune Double Junction probes will out last most other traditional lab grade probes letting you go longer between calibrations, and having to purchase and replace probes less frequently. The Double Junction isolates the reference gel and probe from proteins and other organics that may otherwise precipitate and clog, shortening the lifespan of the probe. Longer lastingReliable readingsQuality

often around branching corals

not a general clean-up crew shrimp

it was designed simply to improve the health and vibrance of all scleractinian corals

If this is an additional pH port

Minimal reduction in PAR output

A second area forms an inverted "v" starting at the ventral fins and ending on the anal fin

Sohal Surgeonfish

admired for its festive red

Dosing frequency

they may eat very small crustaceans

Large 20 cm

Will not be disappointed