Neptune Systems Lab Grade ORP Probe – Accurate ORP Monitoring xodis Marco Dry Rock Boulders (40lb

Marco Dry Rock Boulders (40lb / 18kg box) are a top choice for aquascaping

This continuous

Phosphorus is an essential nutrient for bacteria and microscopic organisms

These replacement rolls are engineered to provide superior mechanical filtration

Each outlet is equipped with independent power monitoring and individual LED indicators

Neptune Systems Lab Grade ORP Probe – Accurate ORP Monitoring xodis Marco Dry Rock Boulders (40lbThe Neptune Systems Lab Grade ORP Probe is designed to deliver precise and reliable oxidation reduction potential (ORP) readings for your aquarium. ORP measures your systems ability to oxidize and is especially important for aquarists using ozone, where accurate ORP monitoring is critical for safety and effectiveness. This probe is not to be confused with dissolved oxygen probes, as it serves a completely different and essential monitoring purpose.