Eheim Pro 3E 2074 Has an added feature for USB connection via Eheim Interface (optional accessory). Enjoy simple and convenient programming, setting and updating your filter from the comfort of your computer. Download FREE user-friendly Eheim Control Center software to get started.
Eheim Pro 3E 2074 Has 3 media baskets that holds 1.5 liters of filter media. Includes 1 liter each of Eheim MECHpro, EHEIM SUBSTRATpro and EHEIM bioMECH for convenient start up.
Eheim Pro 3E 2076 has 3 media baskets while the 2078 has 4. Each media basket holds 2 liters of filter media. The 2076 requires 2 liters of Ehfimech and 4 liters of Ehfisubstrat Pro. The 2078 requires 2 liters of Ehfimech and 6 liters of Ehfisubstrat Pro. All units come with one blue and one white filter media pad.
Adjustable Output Control - Increase or decrease flow rate at a touch of a button. Automatically maintains set output rate and adjusts for filter media blockage.
Bio-Stream Function - Electronically-controlled flow variation provides natural, constantly-changing water flow conditions in the aquarium.
12 Hour Bio-Function - Programmable feature automatically switches between 2 adjustable flow rates within a 12 hour cycle.
Service Indicator - Displays the remaining time until the next cleaning period.
Auto Air Out Function - Detects and automatically bleeds off air trapped under the Filter Head.
Electronic Error Management - Electronic monitoring system detects any irregularities and automatically attempts to rectify the cause.