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Water Filtration & Treatment

Pre-Filters
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HydroLogic Stealth-RO & smallBoy KDF85 Catalytic Carbon Filter Upgrade - For Stealth-RO & smallBoy Systems
In stock
$43.01 $50.95 -16%
Save 17%
HydroLogic PreEvolution Sediment Filter - Pleated - Cleanable
In stock
$42.67 $51.56 -17%
Alchemist™ H2O2 Liquid Oxygen - 1gal (OR)
Out of stock
$42.53
Save 17%
HydroLogic TALLBoy Green Coconut Carbon Filter - 2 GPM - 5 Micron Filtration
In stock
$38.17 $46.13 -17%
Save 17%
HydroLogic Merlin-Garden Pro Green Coconut Carbon Filter - 2 GPM
In stock
$37.48 $45.21 -17%
Central Coast Garden pH Down Solution | 1gal - Concentrate - 75% Phosphoric Acid
Out of stock
$37.30 $49.95 -25%
Hydrologic MicRO RO Membrane, 75 GPD
Out of stock
$37.26 $59.95 -38%
Alchemist H2O2 Liquid Oxygen 34% Gallon - 1gal
In stock
$36.80
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
$36.05 $46.34 -22%
Save 10%
Leader FA5 Clear Filter Housing | 5in - Transparent - 1in Female Thread
In stock
$34.56 $38.57 -10%
Save 19%
HydroLogic Evolution-RO Quick Connect Liquid-Filled Pressure Gauge - 1/2in QC Tee
In stock
$33.99 $41.95 -19%
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HydroLogic Stealth-RO 300 Flush Valve Flow Restrictor | For Stealth-RO 300 Systems
In stock
$30.66 $34.21 -10%
Save 12%
GrowoniX Quick Connect Float Valve with Quick-Connect | for 1/4in or 3/8in
Out of stock
$29.53 $33.39 -12%
GrowoniX Pleated Sediment Filter | for EX/GX600, EX/GX1000, Lil Boss, and Lil Boss Deluxe - 4.5in x 9.75in - Pleated
Out of stock
$28.66 $42.95 -33%
Save 12%
HydroLogic Stealth-RO Replacement Filter Housing | For Stealth-RO Systems
Out of stock
$28.22 $32.14 -12%
Save 2%
Polyester Element for Spin-Down Sediment Filters | 1.5in - 140 Mesh
Out of stock
$27.06 $27.48 -2%
Central Coast Garden pH Up Solution | 1gal - 35% Potassium Hydroxide
In stock
$26.92 $49.95 -46%
General Hydroponics pH Down Liquid - 1gal
In stock
$26.63 $39.06 -32%
General Hydroponics pH Up Liquid - 1gal
In stock
$26.63 $39.06 -32%
Save 17%
AXEON SDF-45-2005 Sediment Filter 4.5" x 20"
Out of stock
$25.93 $31.35 -17%
GrowoniX Eco White Coconut Carbon Filter | for EX400-T, Slim Scrub Systems - 6,000 Gallons of Pure RO Water or 17,000 Gallons of De-Chlorinated Water
Out of stock
$25.53 $38.15 -33%
HydroLogic Stealth-RO and smallBoy ChloraShield Replaceable Carbon Filter Upgrade - 1 GPM - 1 Micron
In stock
$24.74 $35.65 -31%
GrowoniX Spun Sediment Filter | for EX600-T, EX1000-T, XL Scrub, and Sedi Scrub Systems - 4.5in x 20in - Spun
Out of stock
$24.74 $37.09 -33%
AXEON R1 Series Sediment Filter, 5 Micron
In stock
$24.70 $31.35 -21%
Cutting Edge Solutions pH Down | 1gal Bottle
In stock
$23.94 $33.99 -30%
Cutting Edge Solutions pH Up | 1gal Bottle
In stock
$23.94 $33.99 -30%
Save 11%
Dramm Inline Filter | ILF-175 - 10gpm - 40psi
In stock
$23.79 $26.78 -11%
Save 17%
HydroLogic Stealth-RO and smallBoy Green Coconut Carbon Filter - 1 GPM - 10 Micron Filtration
In stock
$20.18 $24.39 -17%
Cultivation Nation pH Down Quart (Case of 12)
Out of stock
$19.98 $25.81 -23%
Cultivation Nation pH Up Quart (Case of 12)
Out of stock
$19.98 $25.81 -23%
Biobizz Bio-PH- PH Regulator 1L pH DOWN
In stock
$19.11 $31.50 -39%
GrowoniX Eco Green Coconut Carbon Filter | for EX100, EX/GX200, GX300, EX/GX400, and Mini Scrub Systems - 2.5in x 9.75in - 2,500 Gallons of Pure RO Water or ...
Out of stock
$18.62 $23.93 -22%
Biobizz Bio-PH+ PH Regulator 1L pH UP
In stock
$17.76 $29.26 -39%
Save 17%
HydroLogic TALLBoy Poly-Spun Sediment Filter - 20in x 2.5in - 5 Micron - Single Use
In stock
$16.81 $20.31 -17%
MICROBE-LIFT Super Dechlorinator Plus | 32oz
In stock
$16.49 $29.99 -45%
Save 18%
Microbe Life Hydroponics pH UP, 1 qt
In stock
$16.45 $19.99 -18%
Save 18%
Microbe Life Hydroponics pH DOWN, 1 qt
In stock
$16.45 $19.99 -18%
Alchemist H2O2 Liquid Oxygen 34% (1 Quart)
In stock
$15.80
General Hydroponics pH Control Kit - 4pc - 8oz pH UP, 8oz pH DOWN, 1oz Indicator, & Vial
In stock
$15.52 $22.75 -32%
Central Coast Garden pH Down Solution | 32oz - Concentrate - 75% Phosphoric Acid
Out of stock
$14.93 $19.95 -25%
Central Coast Garden pH Up Solution | 32oz - 35% Potassium Hydroxide
Out of stock
$14.93 $19.95 -25%
Save 10%
Leader CRL5 Mesh Sediment Filter | 5in - 20 Micron
Out of stock
$14.08 $15.71 -10%
Save 17%
HydroLogic smallBoy Poly-Spun Sediment Filter - 10in x 2.5in - 5 Micron - Single Use
In stock
$13.41 $16.24 -17%
GrowoniX Spun Sediment Filter | for EX/GX600, EX/GX1000, Lil Boss, and Lil Boss Deluxe - 4.5in x 9.75in - Spun
Out of stock
$13.32 $19.98 -33%
GrowoniX Eco White Coconut Carbon Filter | for EX100, EX/GX200, GX300, EX/GX400, and Mini Scrub Systems - 2.5in x 9.75in - 2,500 Gallons of Pure RO Water or ...
Out of stock
$12.88 $19.23 -33%
Save 12%
GrowoniX Replacement Ball Valve | 3/8in
Out of stock
$10.75 $12.15 -12%
General Hydroponics pH Down Liquid - 32oz
In stock
$10.70 $15.68 -32%
General Hydroponics pH Up Liquid - 32oz
In stock
$10.70 $15.68 -32%
Greengro Biologicals Water Conditioner | 8oz - Liquid Concentrate - Removes, Detoxifies & Neutralizes
In stock
$10.67 $18.49 -42%
GrowoniX Micron Spun Sediment Filter | for EX100, EX/GX200, GX300, EX/GX400, and Mini Scrub Systems - 2.5in x 9.75in - Micron Spun
Out of stock
$10.17 $15.28 -33%
Save 11%
GrowoniX Replacement Ball Valve | 1/4in
Out of stock
$10.10 $11.41 -11%
General Hydroponics pH Test Indicator - 8oz
In stock
$9.91 $14.53 -32%
Cutting Edge Solutions pH Down | 32oz Bottle
Out of stock
$9.85 $13.99 -30%
Cutting Edge Solutions pH Up | 32oz Bottle
In stock
$9.85 $13.99 -30%
Netafim Disc Filter Cover O-Ring | 3/4in - 120 Mesh
Out of stock
$8.16 $12.90 -37%
Save 11%
Dramm In-Line Hose Filter | With Element - 80 Mesh
In stock
$7.98 $8.97 -11%
General Hydroponics pH Test Kit Indicator - 1oz
In stock
$7.74 $10.15 -24%
General Hydroponics pH Down Liquid - 8oz
In stock
$7.66 $10.59 -28%
General Hydroponics pH Up Liquid - 8oz
In stock
$7.66 $10.59 -28%
HydroLogic Stealth-RO Double Ended Wrench - For Standard Filter & Membrane Housings
In stock
$5.63 $7.30 -23%
GrowoniX Micron Spun Sediment Filter | for Slim Scrub Systems - 2.5in x 20in - Micron Spun
Out of stock
$5.04 $7.53 -33%
GrowoniX Water Line Divider | 2-Way Splitter - 1/4in - Black
Out of stock
$4.76 $6.65 -28%
Save 12%
HydroLogic Stealth-RO Quick Connect Membrane Elbows | 1/8in NPT x 1/4in QC - Black
Out of stock
$4.08 $4.64 -12%
Save 12%
HydroLogic Stealth-RO Quick Connect Membrane Elbows | 1/8in NPT x 1/4in QC - White
Out of stock
$2.57 $2.93 -12%
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