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Hydro-Logic Small Boy with KDF85 Catalytic Carbon Filter




The Hydro-Logic Small Boy with KDF85 Catalytic Carbon Filter removes 99% of impurities found in water such as chlorine, sediment, rust, VOCs, and more. Leading the industry in performance, the Small Boy has a high flow rate of 60 gallons per hour with a filter capacity of 6,000 gallons. Replacement filters for the KDF85/Catalytic Carbon and Sediment filter are available.

  • Package includes everything you need for easy setup.
  • Dimensions: 14″ x 12″ x 6″
  • 6,000-gallon filter capacity.

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Hydro-Logic Small Boy with KDF85 Catalytic Carbon Filter

Our Small Boy™ with the upgraded KDF 85/catalytic carbon filter has it already installed. Removes up to 99% of chlorine, 90% of sediment, rust, silt, etc., and volatile organic compounds and particulates down to 5 microns @ 1 GPM. Easily produces 60 gallons per hour of clear water and has a filter capacity of 6,000 gallons.


  • High flow rate 60 gallons per hour
  • Rated at 1 GPM (gallons per minute)
  • Everything included in the box for quick hook-up and plug & play performance
  • Heavy duty wall-mountable metal bracket
  • In-line shut off valve
  • Optional garden hose connection kit
  • Replace housings every 3 years

Filter & Replacement Schedule:

KDF85/Catalytic Carbon Filter: 

  • Replace after 6,000 gal (Filter replacement schedules for RO carbon filters based on product water)

Sediment Filter:

  • Replace after 3,000 gallons (approx) or annually


  • 2-stage 10 in filter unit
  • Wall mountable metal bracket
  • Garden hose connector
  • 4 ft feed line
  • 6 ft outlet line
  • 1/4 in shut-off
  • Filter wrench and instructions.
  • Unit size is 12 in x 14 in x 6 in and weight is 8.2 Ib.
Weight 8.2 lbs
Dimensions 6 × 12 × 14 in