{"product_id":"hanna-groline-nutrient-dosing-system-hi981413-10","title":"Hanna GroLine Nutrient Dosing System with Inline Kit HI981413-10","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Hanna GroLine Nutrient Dosing System HI981413-10 is an automated EC, TDS, and temperature controller designed to maintain consistent fertilizer concentrations in hydroponic reservoirs, greenhouse irrigation systems, and other recirculating nutrient applications. Its integrated peristaltic pump automatically doses concentrated nutrient solution according to the grower’s selected conductivity set point.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis HI981413-10 configuration includes the HI30033 EC\/TDS and temperature probe plus the components needed for an inline installation. The controller supports proportional or on\/off dosing, adjustable alarms, automatic temperature compensation, and protective functions intended to reduce nutrient overshooting and pump operation under unsafe conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAutomated nutrient management:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Continuously monitors conductivity and doses fertilizer according to the programmed EC or TDS set point.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIntegrated peristaltic pump:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Eliminates the need to purchase and wire a separate nutrient dosing pump.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEC, TDS, and temperature monitoring:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Tracks three important nutrient-solution measurements through one HI30033 probe.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProportional dosing control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Slows dosing as the measured concentration approaches the target, helping reduce set-point overshooting.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOn\/off control option:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides straightforward dosing for applications where proportional control is unnecessary.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eInline installation kit:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes the fittings, injector, filter, and tubing required for integration into a recirculating irrigation line.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eColor-coded display:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Uses green, yellow, and red backlighting to make operating and alarm conditions easy to identify.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eConfigurable safeguards:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Startup delay, maximum dosing time, high and low alarms, and optional level or flow-switch input help protect the system.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eGrow-room-ready enclosure:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The IP65-rated enclosure resists dust and water jets when correctly installed.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWall-mountable design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Keeps the controller visible and accessible without occupying reservoir or workbench space.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eMeasurement and Control Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEC Range:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 0.00–10.00 mS\/cm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEC Resolution:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 0.01 mS\/cm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEC Accuracy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ±0.10 mS\/cm from 0.00–5.00 mS\/cm and ±0.20 mS\/cm from 5.00–10.00 mS\/cm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTDS Range:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Up to 9,900 ppm, depending on the selected conversion factor\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTDS Resolution:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1 ppm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTDS Accuracy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ±2% of full scale\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTDS Conversion Factor:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Adjustable from 0.45–0.99\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSystem Temperature Range:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 23–140°F, or -5–60°C, when used with the included HI30033 probe\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTemperature Resolution:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 0.1°F or 0.1°C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTemperature Accuracy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ±0.9°F or ±0.5°C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTemperature Compensation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Automatic, with an adjustable coefficient from 0.0–2.4% per °C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePump Flow Rate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Adjustable from 0.5–3.5 liters per hour, or approximately 0.13–0.92 gallons per hour\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum Pump Pressure:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 14 psi\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eControl Modes:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Proportional or on\/off\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePower Supply:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 100–240 VAC, 50\/60 Hz\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnclosure Rating:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e IP65\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eHI30033 EC\/TDS and Temperature Probe\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe included HI30033 combines conductivity and temperature measurement in one probe designed for fertilizer solutions:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMeasures EC, TDS, and temperature\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStainless steel conductivity sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChemical-resistant PVDF body\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegrated temperature sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAutomatic temperature compensation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eQuick Connect DIN connection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApproximately 6.6-foot cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1\/2-inch NPT thread for inline installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e3\/4-inch NPT thread for continuous reservoir immersion\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaximum pressure of approximately 43.5 psi at 77°F\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInstall the probe where nutrient solution is well mixed and moving steadily. Avoid locations where air bubbles can collect around the sensor, since trapped air may cause unstable or inaccurate conductivity readings.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eHow Automated Nutrient Dosing Works\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe HI981413-10 continuously measures the nutrient solution and compares its conductivity with the programmed set point. When used to add fertilizer, the controller activates its pump when EC or TDS falls below the target.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIn proportional mode, the pump automatically slows as the solution approaches the set point. This helps prevent excessive fertilizer from being injected faster than the reservoir can circulate and stabilize.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe controller can add nutrient concentrate, but it cannot remove dissolved fertilizer. If EC rises above the desired level, the reservoir must normally be diluted with suitable source water or otherwise corrected by the grower.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eInline Installation Guidelines\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe HI981413-10 is intended for integration into a recirculating nutrient or irrigation line:\u003c\/span\u003e\u003c\/p\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003eMount the controller vertically where it is protected from direct sunlight, continuous dripping, and excessive vibration.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstall the HI30033 probe in the supplied inline fitting or saddle.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePosition the probe in an area with consistent solution flow and minimal air bubbles.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstall the nutrient injection point downstream and sufficiently separated from the probe.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConnect the aspiration tubing between the nutrient concentrate container and the pump inlet.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConnect the dispensing tubing between the pump outlet and injection valve.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrime the pump before enabling automatic control.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConfirm that circulation is operating before beginning nutrient dosing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCalibrate the probe and program the desired set point, control mode, alarms, and dosing limits.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSeparating the probe from the injection point gives concentrated fertilizer time to mix into the solution before another measurement is taken. Poor mixing or installing the injector too close to the probe may produce unstable readings or repeated dosing cycles.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eElectrical connections and permanent installation should be completed by appropriately qualified personnel. Disconnect power before servicing or wiring the system.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCalibration\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe controller supports automatic one-point conductivity calibration using either:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1.41 mS\/cm conductivity standard\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e5.00 mS\/cm conductivity standard\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTDS readings are derived from the EC measurement and the selected conversion factor. Calibrating conductivity also calibrates the corresponding TDS display.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor reliable performance:\u003c\/span\u003e\u003c\/p\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003eInspect and clean the probe before calibration.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePour fresh conductivity standard into a clean container.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlace the probe in the standard while avoiding trapped air bubbles.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAllow the reading to stabilize.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eComplete the calibration through the controller menu.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDiscard the used standard rather than returning it to its original container.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCalibration frequency depends on operating conditions, but the probe should be checked regularly and whenever readings appear inconsistent.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAlarms and Dosing Protection\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe HI981413 includes several configurable functions that support dependable automated operation:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh and low EC\/TDS alarms:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Alert the grower when conductivity remains outside the selected range.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum dosing-time protection:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Stops the pump when it operates longer than the programmed limit.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eStartup delay:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Allows circulation and readings to stabilize before automatic dosing begins.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eExternal level or flow-switch input:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Can prevent dosing when reservoir level or solution flow is inadequate when used with a compatible sensor.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAlarm relay:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides a connection for compatible external warning equipment.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eManual pump control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Allows the pump and tubing to be primed during setup or maintenance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eColor-coded backlight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides visual indication of normal operation, attention conditions, and alarms.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOptional flow switches, level sensors, external alarm devices, and separate pH controllers are sold separately unless specifically stated otherwise.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhat Is Included\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe HI981413-10 inline configuration includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGroLine EC\/TDS nutrient dosing controller\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegrated peristaltic dosing pump\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHI30033 EC\/TDS and temperature probe\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInline mounting saddles and fittings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNutrient injection valve\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAspiration filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFlexible aspiration tubing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRigid dispensing tubing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConductivity calibration standard\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCalibration beaker\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePower connection cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eQuality documentation and instruction manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePackage contents can be revised by the manufacturer. Consult the current product packaging or documentation to confirm included accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eRoutine Maintenance\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eInspect the probe regularly for fertilizer residue or mineral buildup.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClean the probe with a compatible Hanna cleaning solution when necessary.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCalibrate after cleaning and before critical growing cycles.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCheck aspiration and dispensing tubing for cracking, blockage, or leaks.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInspect the injection valve and aspiration filter for accumulated fertilizer salts.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReplace worn peristaltic pump tubing according to operating conditions.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConfirm that the pump is correctly primed before returning to automatic control.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTest alarms and maximum dosing-time protection periodically.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep the controller enclosure clean and ensure cable connections remain secure.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Usage Notes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThe HI981413-10 controls nutrient concentration through EC or TDS measurements; it does not measure or adjust pH.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAutomated pH control requires a separate system such as the Hanna GroLine HI981412 pH Dosing System.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever allow concentrated fertilizer to be injected without active solution circulation.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBegin with conservative dosing settings and verify the reservoir response before increasing pump speed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChoose the appropriate TDS conversion factor for the feeding chart or conductivity scale being used.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvoid installing the probe immediately beside the nutrient injection point.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAn IP65 rating does not make the controller submersible.\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFollow the current Hanna Instruments manual for installation, calibration, electrical connections, and maintenance.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41966306230436,"sku":"HI981413-10","price":530.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1298\/4199\/products\/Hanna_-GroLine-Nutrient-Dosing-System-Hanna-Instruments-1670272086.jpg?v=1670272087","url":"https:\/\/www.gardensupplyguys.com\/products\/hanna-groline-nutrient-dosing-system-hi981413-10","provider":"GARDEN SUPPLY GUYS","version":"1.0","type":"link"}