Hydro-Logic
Hydrologic Big Boy w/Upgraded KDF85/Catalytic Carbon Filter
Best filtration upgrade for city dwellers tackling heavy water contaminants.
Upgrade your Hydro-Logic BIGboy™ System with the KDF85 Carbon Filter for enhanced water purification. This filter is specifically designed to integrate seamlessly, significantly improving your system's ability to tackle common city water contaminants. It effectively reduces chlorine, chloramines, iron, hydrogen sulfide, and heavy metals, while also addressing rust and sediment. Enjoy cleaner, purified water for various applications with this essential replacement filter, ensuring superior water quality and contaminant reduction.
$145.00
Owner Satisfaction
4.7
/ 5
Category Rank
2
/ 810
#2 in Water Filters
Price vs Category Average
-73%
Below average
Filter Type
85
/ KDF Catalytic Carbon
Who it's for
- Busy users wanting less frequent filter maintenance and replacements
- Gardeners seeking superior water purity for sensitive plants
- Commercial growers needing high-flow rates for large-scale irrigation
Who should skip it
- Hydroponic growers requiring precise control over water mineral content
- Homeowners with limited space or small indoor grow areas
- Budget-conscious buyers looking for low-cost, basic filtration
Performance breakdown
Contaminant Versatility
Handles a broad spectrum of city water issues with impressive efficiency.
Chloramine Reduction
Catalytic carbon effectively neutralizes stubborn chemical disinfectants in municipal supplies.
Heavy Metal Filtration
KDF85 media provides a robust defense against dissolved metallic impurities.
System Integration
Designed for a seamless, frustration-free upgrade to existing BIGboy setups.
Sediment Handling
Reliably clears rust and particulate matter for consistently cleaner output.
Media Longevity
High-capacity design ensures extended performance before requiring a filter change.
Key Specs
Filter Type
KDF85 Catalytic Carbon
Contaminant Reduction
Chlorine, Chloramines, Iron, Hydrogen Sulfide, Heavy Metals, Rust, Sediment
Installation Type
Under Sink, Countertop, Pitcher, Refrigerator
Compatible Systems
BIGboy™ Systems
Features
- Enhances BIGboy™ Systems' filtration
- KDF85 catalytic carbon technology
- Reduces chlorine and chloramines
- Removes heavy metals and iron
- Filters out hydrogen sulfide
- Addresses rust and sediment issues
- Ideal for city water dwellers
- Provides purified water
What customers say
Customers consistently praise the exceptional quality and reliability of the Hydrologic Big Boy system. The upgraded KDF85 and Catalytic Carbon filters deliver noticeably superior water taste and odor reduction, making it a favorite for serious water users. Reviewers frequently highlight the system's robust build and consistent high flow rate, confirming its long term dependability. While the initial investment is higher, consumers feel the sustained performance and reduced need for frequent filter changes justify the premium price, establishing strong value.
Know before you buy
Yes, this KDF85/Catalytic Carbon filter is specifically engineered to integrate seamlessly with all standard BIGboy filtration systems.
While standard carbon filters primarily focus on chlorine and taste, the KDF85 media uses a redox process to effectively neutralize heavy metals, iron, and hydrogen sulfide, making it much more capable for city water applications.
Yes, the catalytic carbon and KDF85 combination is specifically designed to reduce hydrogen sulfide, which is the primary cause of that 'rotten egg' odor.
Yes, this filter is designed to address both chemical contaminants like chlorine and chloramines, as well as physical particulates such as rust and sediment.
While it is optimized for city water contaminants, the KDF85 media is highly effective at treating iron and hydrogen sulfide, which are common issues in well water. However, you should ensure your system is pre-filtered for heavy sediment if your well water quality is poor.
Still have a question?
Ask Hayley anything about this product before you decide.