Collection: Controllers & Monitors

What a Controller Actually Buys You

Testing by hand tells you what your water was doing when you happened to test. A controller tells you what it is doing right now, and acts on it. Continuous temperature, pH, ORP and salinity logging, programmable outlets, and alerts when something drifts out of range.

Pick the Right Level

• Single-parameter monitors — a straightforward dedicated pH or ORP display.
• Full controllers — modular, expandable systems with switched outlet bars, flow and leak detection, and remote app access.
• Automatic testers — hands-off testing for calcium, alkalinity, magnesium, nitrate and phosphate; reagents sold separately.
• All-in-one monitors — water quality plus lighting measurement in a single device.

Plan for consumables. Reagents, calibration solutions and replacement probes wear out on a schedule. Questions on building a system? Email info@jlaquatics.com.