IceCap 4-Probe Magnetic Holder

A Simple Way to Organize and Mount Probes

The IceCap 4-Port Magnetic Probe Holder (SKU: IC-MPH-4) is an authentic, studio-grade sump organization rack distributed by CoralVue to bring absolute structural security and a clean presentation to your under-cabinet aquarium command centers. Precision monitoring tools—such as pH electrodes, ORP sensors, temperature probes, and salinity meters—are essential for maintaining a stable marine or freshwater ecosystem. However, leaving these lines loose in your sump is a recipe for disaster. Heavy filter currents or shifting cords can easily bounce a probe out of the water, causing automated controllers to misread the dry air and dose dangerous amounts of kalkwasser, buffers, or top-off water. The IC-MPH-4 locks all four lines securely in place to eliminate this hazard.

Constructed from robust, heavy-wall cell-cast acrylic, the 4-port holder is built to withstand continuous submersion in harsh high-salinity marine sumps. Traditional probe racks rely on low-grade rubber suction cups that harden, become brittle, and detach within months. The IceCap series bypasses this flaw completely by using a specialized Dual-Sealed Magnetic Mount. Both the internal wet-side assembly and the dry-side backing block feature powerful magnets completely encased inside acrylic blocks to prevent rust. Hand-tightened nylon thumbscrews line every channel, letting you easily adjust each probe vertically to match your sump chamber's specific operating waterline.

Key Features

• Protects Against False Controller Readings: Eliminates the risk of floats or water movement displacing sensitive electronic probes into dry zones or pump impellers.

• Universal Equipment Alignment: Precision cutouts accept standard 21​-inch diameter probes, making it a perfect fit for Neptune Systems Apex, HYDROS, GHL Profilux, and Milwaukee sensors.

• Zero-Tool Magnetic Placement: Simply slide the rack along your glass baffle to easily reposition the array during seasonal filter cleaning or maintenance intervals.

Note: This retail box includes (1) 4-port wet-side acrylic probe rack with pre-installed nylon thumbscrews and (1) dry-side magnetic backing pad. Monitoring probes, controllers, and extension cords are sold under separate catalog categories.

Online exclusive: this item is ordered in for you and is usually ready within a few business days. Choose in-store pickup, local delivery or shipping at checkout.