0Cart

Water Filtration & Treatment

Pre-Filters
Sort by:
Price: High to Low
Show:
64
AXEON HYDRO RO Hyperfiltration Membranes, 2-Pack
In stock
$259.87 $399.00 -35%
Save 16%
HydroLogic Stealth-RO Pressure Booster Pump - 110V
In stock
$258.08 $305.55 -16%
GrowoniX EX200 High-Flow Reverse Osmosis Filtration System | 2:1 System Ratio - 8.5gph of Pure RO Water - Stainless Steel Liquid-Filled Pressure Gauge - Manu...
Out of stock
$248.43 $316.39 -21%
GrowoniX SlimScrub Water Filtration System | 120gph - 16,000gal Capacity - Filters out 99% of Chlorine and 90% of Sediment - Includes KDF/CAT Carbon Filter
Out of stock
$238.95 $297.85 -20%
HydroLogic Stealth-RO 150 Water Filtration System - 150 GPD
In stock
$222.98 $291.71 -24%
General Hydroponics PRO pH Down - 6gal
In stock
$219.73 $348.72 -37%
General Hydroponics PRO pH Up - 6gal
In stock
$219.73 $348.72 -37%
HydroLogic Evolution-RO 1000 Membrane Element - 600 GPD
In stock
$218.00 $285.18 -24%
HydroLogic ARCS System Stage 2 Replacement Cartridge - Stage 2 - Heavy Metal Reduction Filter
In stock
$195.88 $251.21 -22%
Danner Submersible Ultraviolet Clarifier | 10 Watt
In stock
$195.79 $259.99 -25%
Save 11%
HydroLogic Evolution-RO 1000 Manifold
In stock
$191.10 $214.29 -11%
HydroLogic TALLBoy De-Chlorinator and Sediment Water Filtration System - 2 GPM - 5 Micron
In stock
$189.54 $243.08 -22%
HydroLogic HyperLogic Membrane Cleaning Cartridge Acid Scale Removal - 4.5in x 20in - Single Use
In stock
$183.76 $240.50 -24%
Save 12%
AXEON HYDRO RO EZ-Twist Sediment and Carbon Cartridges, 3-pack
Out of stock
$175.37 $199.00 -12%
Save 16%
GrowoniX UV Sterilization Filter with Quick-Connect | 1gpm - 1/4in Quick-Connect - 120V AC Power - Destroys 99.9% of Micro-Organisms
Out of stock
$164.81 $196.63 -16%
Save 17%
GrowoniX Mini Scrub Water Filtration System | 60gph - 8,000gal Capacity - Filters out 99% of Chlorine and 90% of Sediment - NSF Listed - Includes KDF/CAT Car...
Out of stock
$164.49 $197.26 -17%
AXEON – Big Switch Series Float Switch, 220V
In stock
$161.20 $216.23 -25%
GrowoniX Replacement High-Flow Membrane | for EX800 Systems
Out of stock
$156.81 $218.25 -28%
Netafim Manual Disc Filter | 1in
Out of stock
$156.21
Save 7%
HydroLogic Monitor Cross - 1in - Schedule 80 - PVC
In stock
$155.19 $166.50 -7%
Twist II Clean Filter | 1in
Out of stock
$153.33
Rusco Spin-Down Filter | 5.5in W x 17.875in L / Flow capacity 18-100gpm / Max pressure 150 PSI / Port size 2in slip, 140 Mesh
Out of stock
$133.69
HydroLogic Stealth-RO 150 & 350 Membrane Element - 350 GPD
In stock
$129.14 $165.60 -22%
Save 18%
HydroLogic BIGboy KDF85 Catalytic Carbon Filter Upgrade
In stock
$123.58 $149.95 -18%
GrowoniX Premium KDF85 Catalytic Carbon Filter | for CX4000, EX1000-T, EX600-T, XL Scrubber -17,000 Gallons of Pure RO Water or 34,000 Gallons of De-Chlorina...
Out of stock
$115.08 $159.29 -28%
Cutting Edge Solutions pH Down, 1 qt, case of 12
In stock
$107.48 $167.88 -36%
Cutting Edge Solutions pH Up, 1 qt, case of 12
In stock
$107.48 $167.88 -36%
HydroLogic smallBoy Dechlorinator & Sediment Water Filtration System - 1 GPM - 5 Micron
In stock
$104.22 $133.66 -22%
HydroLogic ARCS System Stage 1 Replacement Cartridge - Stage 1 - Sediment Filter
In stock
$101.74 $130.47 -22%
General Hydroponics PRO pH Down - 2.5gal
In stock
$98.28 $168.07 -42%
General Hydroponics PRO pH Up - 2.5gal
In stock
$98.28 $168.07 -42%
Save 18%
HydroLogic PreEvolution KDF Catalytic Carbon Filter
In stock
$94.28 $114.95 -18%
HydroLogic BIGboy Green Coconut Carbon Filter - 7 GPM - 5 Micron Filtration
In stock
$87.87 $112.68 -22%
Cutting Edge Solutions pH Down, 1 gal, case of 4
In stock
$87.05 $135.96 -36%
Cutting Edge Solutions pH Up, 1 gal, case of 4
In stock
$87.05 $135.96 -36%
HydroLogic Evolution-RO 1000 Wall Mount Bracket - Stainless Steel
In stock
$86.79 $111.32 -22%
GrowoniX Premium KDF85 Catalytic Carbon Filter | for GX1000, GX600, EX1000, EX600, Lil Boss Deluxe, Lil Boss Systems - 8,000 Gallons of Pure RO Water or 17,0...
Out of stock
$85.24 $117.99 -28%
HydroLogic PreEvolution ChloraShield Replaceable Carbon Filter Upgrade - 1 GPM - 1 Micron
In stock
$84.70 $108.60 -22%
Rusco Spin-Down Filter | 1.5in 140 mesh
Out of stock
$83.11
GrowoniX Replacement High-Flow Membrane | for EX/GX200, GX300, EX/GX400 and EX400-T Systems
Out of stock
$80.20 $111.61 -28%
Save 11%
HydroLogic Evolution-RO 1000 Fitting Kit
Out of stock
$78.35 $87.86 -11%
Save 18%
HydroLogic TALLBoy KDF85 Catalytic Carbon Filter Upgrade
In stock
$70.07 $84.95 -18%
GrowoniX Eco White Coconut Carbon Filter | for EX600-T, EX1000-T, and XL Scrub Systems - 17,000 Gallons of Pure RO Water or 34,000 Gallons of De-Chlorinated ...
Out of stock
$69.69 $96.06 -27%
Save 18%
HydroLogic Evolution-RO ChloraShield Replaceable Carbon Filter Upgrade - 1 GPM - 1 Micron
In stock
$68.80 $83.95 -18%
Save 11%
HydroLogic Evolution-RO 1000 Filter Housing
In stock
$64.66 $72.50 -11%
HydroLogic BIGboy Sediment Filter - Pleated - Cleanable
In stock
$64.54 $82.79 -22%
GrowoniX Premium KDF85 Catalytic Carbon Filter | for EX800, EX400-T, Slim Scrub Systems - 6,000 Gallons of Pure RO Water or 17,000 Gallons of De-Chlorinated ...
Out of stock
$60.06 $83.13 -28%
Polyester Element for Spin-Down Sediment Filters | 2in - 140 Mesh
Out of stock
$55.16
Netafim Manual Disc Filter | 0.75in
Out of stock
$54.61
HydroLogic TALLBoy ChloraShield Replaceable Carbon Filter Upgrade - 2 GPM - 1 Micron
In stock
$48.05 $73.45 -35%
GrowoniX Eco Green Coconut Carbon Filter | for GX1000, GX600, EX1000, EX600, Lil Boss Deluxe, Lil Boss Systems - 8,000 Gallons of Pure RO Water or 17,000 Gal...
Out of stock
$47.70 $65.74 -27%
GrowoniX Eco White Coconut Carbon Filter | for GX1000, GX600, EX1000, EX600, Lil Boss Deluxe, Lil Boss Systems - 8,000 Gallons of Pure RO Water or 17,000 Gal...
Out of stock
$47.61 $73.45 -35%
HydroLogic HyperLogic Poly-Spun Sediment Pre-Filter - 20in x 4.5in - 5 Micron - Single Use
In stock
$45.59 $59.75 -24%
Rusco SPIN-DOWN Sediment Filter Cover | Clear - 9-7/8in L x 2-3/4in W - For 1.5in Plumbing Connection - 1/2in MPT Nipple on Bottom
Out of stock
$45.52
Save 17%
HydroLogic Stealth-RO & smallBoy KDF85 Catalytic Carbon Filter Upgrade - For Stealth-RO & smallBoy Systems
In stock
$42.04 $50.95 -17%
HydroLogic PreEvolution Sediment Filter - Pleated - Cleanable
In stock
$40.20 $51.56 -22%
HydroLogic TALLBoy Green Coconut Carbon Filter - 2 GPM - 5 Micron Filtration
In stock
$35.96 $46.13 -22%
HydroLogic Merlin-Garden Pro Green Coconut Carbon Filter - 2 GPM
In stock
$35.31 $45.21 -22%
Central Coast Garden pH Down Solution | 1gal - Concentrate - 75% Phosphoric Acid
Out of stock
$35.14 $49.95 -30%
Hydrologic MicRO RO Membrane, 75 GPD
Out of stock
$35.10 $59.95 -41%
Save 11%
Leader FA5 Clear Filter Housing | 5in - Transparent - 1in Female Thread
In stock
$34.29 $38.57 -11%
HydroLogic Stealth-RO 300 Flush Valve Flow Restrictor | For Stealth-RO 300 Systems
Out of stock
$34.21
GrowoniX Eco Green Coconut Carbon Filter | for EX400-T and Slim Scrub Systems - 2.5in x 20in - 6,000 Gallons of Pure RO Water or 17,000 Gallons of De-Chlorin...
Out of stock
$33.96 $46.34 -27%
HydroLogic Stealth-RO Replacement Filter Housing | For Stealth-RO Systems
Out of stock
$32.14
Show another 47 products
Product filters
Free Shipping
In Stock
Price
$
–
$
  • $2
  • $91577
Shop Owner
Brand
    Show all (20)