Description
Kamoer FX-STP 3 Continuous-Duty Calcium Reactor Dosing Pump
The Kamoer FX-STP 3 is a third-generation continuous-duty peristaltic pump designed specifically for calcium reactor applications requiring steady, uninterrupted flow. Where most dosing pumps are designed for short intermittent bursts, the FX-STP 3 is engineered to run 24 hours a day, 7 days a week, delivering a consistent, metered effluent rate that takes the guesswork out of CaRx tuning. The upgraded closed-loop stepper drive is the key advancement over the previous FX-STP 2: the motor actively monitors and corrects for any missed steps in real time, meaning the flow rate you set is the flow rate you get, even under varying back pressure.
At up to 150 ml/min, the FX-STP 3 offers a higher maximum output than its predecessor, with speed adjustable in 0.1 rpm increments for fine-grained control. WiFi connectivity through the Kamoer Remote app lets you monitor and adjust flow remotely, while the onboard rotary encoder and display provide local control without needing a phone. Settings survive power outages thanks to built-in memory backup. The redesigned KCS3 pump head uses a 3-roller configuration with 1.6mm wall tubing and a built-in usage timer that alerts you when the tube is approaching the end of life, so tubing changes are scheduled, not reactive.
Key Features:
Closed-loop stepper motor drive actively corrects missed steps for sustained flow accuracy — a meaningful upgrade over open-loop designs
150 ml/min maximum flow rate at 350 rpm, adjustable in 0.1 rpm increments via rotary encoder
6,000-hour rated motor life for long-term, low-maintenance continuous operation
WiFi control via Kamoer Remote app (iOS and Android) — adjust flow rate, monitor run time, and review status remotely
Memory backup retains all settings if power is interrupted; pump resumes at the same set point on restart
KCS3 3-roller pump head uses 3.2 × 6.4mm tubing (same size as FX-STP 2 — replacement tubing is the same)
Tube usage timer with alarm tracks cumulative run time and alerts when the pump tube is due for replacement
Onboard display and rotary encoder for full local control without the app
Ideal For:
Reef hobbyists running a calcium reactor who need a consistent, drift-free effluent drip rate
High-demand systems where the pump runs 24/7 and motor longevity is a priority
Reefers who want remote monitoring and adjustment of their CaRx feed rate via smartphone
Kalkwasser reactors or sulfur denitrators that require continuous, low-volume fluid delivery
Aquarists upgrading from the FX-STP 2 who want the accuracy benefit of closed-loop motor control
Systems with variable back pressure where an open-loop pump would otherwise drift
What's Included:
1× Kamoer FX-STP 3 main unit (with KCS3 pump head installed)
1× DC 24V 2A power adapter (regional plug variant per SKU: US, EU, UK, or AU)
1× Silicone tube, 3.2 × 6.4mm (1 meter)
1× Silicone tube, 6.4 × 9.6mm (1 meter, for calcium reactor outlet connection)
1× Water pipe fitting, 1/8" to 1/4" straight through
1× Quick start guide (English)
1× Certificate of compliance
Specifications:
Product Type: Continuous-duty peristaltic dosing pump
Power Supply: DC 24V, 2A adapter (included)
Maximum Power: 50W
Motor Type: Closed-loop stepper motor
Motor Life: 6,000 hours
Maximum Speed: 350 rpm
Speed Regulation Resolution: 0.1 rpm
Maximum Flow Rate: 150 ml/min (at 350 rpm, pure water, atmospheric pressure, 20°C)
Pump Tube ID × OD: 3.2 × 6.4mm
Pump Head: KCS3, 3-roller, 1.6mm tube wall thickness
Interface / Control: Rotary encoder (onboard) / WiFi (Kamoer Remote app)
Display: Onboard LCD screen
Memory Backup: Yes — settings retained on power loss
Tube Usage Timer: Yes — alarm at end of tube service life
Overall Weight: Approximately 1,145g (2.52 lbs)
Dimensions: 148mm (L) × 83mm (W) × 124mm (H) / approximately 5.83" × 3.27" × 4.88"
WARRANTY
CoralVue, Inc. and Kamoer hereby guarantee this product to be free from defects in material and workmanship for a period of:
One (1) year warranty on device body/housing
One (1) year warranty on dosing pump motor (not dosing head(s))
Tubing, head rollers, and head bushings are considered wearable parts because they experience regular friction, pressure, and use over time, leading to natural degradation. Since these components are expected to wear out as part of normal operation, they are not covered under the limited warranty.
Warranty is activated on the date of purchase.
This Standard Limited Warranty applies and is limited as follows:
To the product only as long as it remains in the possession of the original purchaser.
To the product that has not been subject to accident, misuse or abuse.
To the product that has not been modified, altered, defaced, or had repairs made or attempted by other than CoralVue, Inc.
That CoralVue be immediately notified in writing within ten (10) days of first knowledge of defect by owner or his agent.
That CoralVue, Inc. shall be given first opportunity to make any repairs, replacements or corrections to the defective construction within a reasonable period of time.
Under no circumstances shall CoralVue and/or the Manufacturer be liable by virtue of this warranty or otherwise for damage to any person or property whatsoever for any special, indirect, secondary or consequential damages of any nature however arising out of the use or inability to use because of the product defect.
