IceCap External Algae Scrubber Pro - Small

The IceCap External Algae Scrubber Pro - Small is an external algae turf scrubber for aquariums up to 100 gallons, designed to grow algae in a controlled chamber so nitrate, phosphate, and other dissolved nutrients can be physically removed from the system. Its external design saves sump space while the included EVO-1000 feed pump, integrated 24V LED lighting, removable algae screen, and emergency overflow protection give reef keepers a compact nutrient export solution for systems with suitable drain plumbing.

Small External IceCap Pro Turf Scrubber Overview

The Small External Algae Scrubber Pro is built for aquariums where nutrient control is needed but sump footprint is limited. Instead of letting nuisance algae grow across rockwork, glass, and equipment, the scrubber creates a dedicated growth zone outside and above the sump. Aquarium water is pumped through the scrubber, trickles down an illuminated screen, and returns by gravity through drain plumbing. As algae grows on the screen, it takes up nutrients from the water and can be harvested during maintenance.

This small model is a strong fit for compact reef systems, smaller saltwater aquariums, and higher-nutrient tanks where controlled algae growth can complement protein skimming, water changes, media reactors, and other filtration. The external layout is especially useful when the sump is crowded with a skimmer, return pump, probes, dosing lines, or other equipment.

Small External Scrubber Features

• External sump-saving layout: The scrubber is designed to sit outside and above the sump, leaving valuable in-sump space available for other filtration equipment.
• Natural nutrient export: Controlled algae growth helps remove nitrate, phosphate, and other pollutants as algae is harvested from the screen.
• Included EVO-1000 feed pump: The supplied pump provides water delivery to the scrubber so the system does not require a separate feed pump purchase.
• Dual LED illumination: Two 6W internal 24V LEDs illuminate the screen to encourage algae growth in the dedicated chamber.
• Emergency overflow protection: A secondary overflow drain adds extra protection if the main drain becomes restricted.
• Multi-directional input with valve: The adjustable input helps control flow across the screen for better tuning during setup.
• Removable screen design: The algae screen can be removed for harvesting without dismantling the entire unit.
• Reverse-daylight option: Running the scrubber lights opposite the display lighting schedule can help support more stable aquarium pH.

IceCap External Algae Scrubber Pro - Small Specifications

• Product type: External algae turf scrubber
• Part number: IC-AGS-1EXTPRO
• Recommended aquarium size: Up to 100 gallons
• Dimensions: 7" L x 8.7" W x 11.8" H
• Screen size: 8.5" x 6"
• LED lamps: 2 x 6W
• Total LED wattage: 12W
• Water pump: EVO-1000
• Water pump power: 20W
• Maximum flow rate: 250 GPH
• Output size: 1" slip PVC
• Overflow protection drain size: 1/2" slip PVC
• Installation type: External above-sump installation

External Scrubber Compatibility Notes

Drain plumbing is required: The IceCap External Algae Scrubber Pro - Small is for external use only and requires drain plumbing back to the sump. Confirm cabinet clearance, sump position, pipe routing, and access for harvesting before installation. The unit should be positioned so water can safely drain by gravity and so the screen can be removed without disturbing nearby equipment.

Match flow and light period to the system: Nutrient levels, feeding, bioload, light schedule, and flow rate all affect algae growth. A timer or aquarium controller is recommended for LED scheduling. Many reef keepers begin with a moderate photoperiod and adjust based on algae growth, nutrient readings, and pH trends.

Official IceCap Turf Scrubber Video

Setting Up the Small External Turf Scrubber

Place the scrubber outside and above the sump, install the included EVO-1000 feed pump, connect the required drain plumbing, and confirm water returns safely to the sump. Adjust the input valve so water spreads evenly across the screen without splashing into the LED chambers. Once algae growth covers the screen, remove the pipe and screen, rinse under water, scrape away a portion of the algae, and leave some growth behind to seed the next cycle.

What's Included

• 1 x IceCap External Algae Scrubber Pro - Small
• 1 x EVO-1000 feed pump
• Hose for feed pump connection