Di-4 Drop-In Fleece Filter System with Replacement Roll

In stock


1 x Di-4 Drop-In Fleece Filter System   + $0.00

1 x Fleece Roll Replacement for Di-4   + $0.00

1 x Bundle OOS Placeholder   + $0.00

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    Klir Di-4 Filter Drop-In Fleece Filter System fits in most sumps with a 4" filter sock tray and will eliminate the need to replace filter socks. The 50-micron fleece roll will help eliminate free-floating particles and automatically advance when the fleece starts to clog, exposing new fleece. The Di-4 has the capability of handling up to 750 GPH and producing crystal clear water. 


    Maximum Flow Rate - 750 GPH

    • Fits in tight areas
    • Compatible with most 4" filter sock holes
    • Includes 25 yards of 50-micron fleece
    • Fully automatic with smart controller
    • Removable lid with carbon insert for noise and odor control
    • Multiple units can be placed side-by-side


    Traditionally filter socks have been used to polish aquarium water from particulates and detritus, and now with the Klir Di-4 Drop-In Fleece Filter System, you can throw away your filter socks for good! The Klir Di-4 can hold up to 25 yards of 50-micron fleece allowing it to last for months at a time without having to be maintained in any way. The compact design lets it fit in tight spaces, and since you only need to access it once every few weeks or months, having direct access like filter socks in no longer a concern. Some tanks may need to replace the fleece once every couple months where others may need to replace it more often, and that will depend on your bio-load along with feeding habits and a few other variables, but in most cases, a single fleece roll can last up to 3 months without having to be replaced. 

    Klir Di-4 Dimensions


    How the DI-4 Works

    Water will be able to enter the Klir Di-4 from two sides and then travel down to the bottom where it can be pushed through the fleece material, where any particles will be collected. Over time the debris collected will start to clog the fleece tower and the water level will start to rise in the sock tray, and that is where the optical eye sensor comes into play. Once the water level reaches the eye, the Klir will automatically activate the roller, exposing new fleece and allowing water to flow freely again, dropping the water level below the sensor. 



    • Dimensions:4.125" L x 4.125" W x 17.125" H
    • Flow Rate:750 GPH max
    • Filter Sock Hole Requirements:3.8" (min O.D.) to 4.25" (Max O.D.)
    • Power Consumption:0.6A@12VDC



    What's Included?

    1x Klir Di-4 Filter Tower Assembly

    1x 25 Yards 50-Micron Fleece Roll

    1x Motor Assembly

    1x Controller Assembly

    1x Optical Eye Sensor

    1x Controller Power Supply

    1x Activated Carbon Insert

    1x 3.85" Filter Sock Adapter Plate

    1x 4" Filter Sock Adapter Plate (preinstalled)

    1x 4.25" Filter Sock Adapter Plate


    Sump Requirements:

    • Sump with filter sock tray
    • Capable of holding 1.5" of water above the sock tray
    • 8.125" of space below the sock tray
    • 4.125" opening above the sock tray
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    Product Questions

    Is this apex compatible?
    Question by: Robert Clark on May 18, 2022, 7:37 PM
    Hey Robert, thanks for the question. The Apex will have no control over these other than on/off functionality.
    Answer by: James Johnson (BRS Staff) on May 19, 2022, 10:11 AM
    Would this fit a trigger systems sapphire 26 sump?
    Question by: George on Mar 4, 2022, 9:27 PM
    Hey there,
    Thank you for reaching out to us. As the Trigger sump has oval sock holes, this will not fit.
    Answer by: Matt Lucero (BRS Staff) on Mar 9, 2022, 9:46 AM
    Does this one fit Eshopps CUBE Nano Refugium Sump? It looks compatible from the spec, but I wonder has anyone tried this before?
    Question by: PCH on Jan 11, 2022, 9:22 PM
    We have not tried this to know for certain if it fits. I would reach out to Eshopps to make sure.

    Eshopps – (626) 968-3678 Eshopps Support Portal
    Answer by: Matt Lucero (BRS Staff) on Jan 13, 2022, 12:35 PM