0Cart

Water Filtration & Treatment

Pre-Filters
Sort by:
Price: High to Low
Show:
64
HydroLogic HyperLogic Membrane Cleaning Cartridge Acid Scale Removal - 4.5in x 20in - Single Use
In Stock: 11
$201.92 $240.50 -16%
Twist II Clean Filter | 1in
In Stock: 2
$190.74
AXEON – Big Switch Series Float Switch, 220V
Out of stock
$176.08 $216.23 -19%
HydroLogic Monitor Cross - 1in - Schedule 80 - PVC
In Stock: 8
$171.08
Biobizz Bio-PH- PH Regulator 10L pH DOWN
In Stock: 7
$154.67 $217.84 -29%
Biobizz Bio-PH+ PH Regulator 10L pH UP
In Stock: 5
$150.80 $212.40 -29%
HydroLogic Stealth-RO 150 & 350 Membrane Element - 350 GPD
In Stock: 117
$139.06 $165.60 -16%
HydroLogic ARCS System Stage Replacement Cartridge - Stage 3 - pH Neutralizing & Remineralizing Filter
In Stock: 10
$135.66 $161.57 -16%
Rusco Spin-Down Filter | 1.5in 140 mesh
Out of stock
$134.82
HydroLogic BIGboy KDF85 Catalytic Carbon Filter Upgrade
In Stock: 86
$133.08 $149.95 -11%
AXEON HYDRO RO EZ-Twist Sediment and Carbon Cartridges, 3-pack
Out of stock
$127.80 $199.00 -36%
Cutting Edge Solutions pH Down, 1 qt, case of 12
In Stock: 36
$117.41 $167.88 -30%
Cutting Edge Solutions pH Up, 1 qt, case of 12
In Stock: 27
$117.41 $167.88 -30%
Alchemist H2O2 Liquid Oxygen 34% 5 Gallon
In Stock: 96
$116.95
General Hydroponics PRO pH Down - 2.5gal
In Stock: 64
$114.86 $179.83 -36%
General Hydroponics PRO pH Up - 2.5gal
In Stock: 31
$114.86 $179.83 -36%
HydroLogic smallBoy Dechlorinator & Sediment Water Filtration System - 1 GPM - 5 Micron
In Stock: 37
$112.22 $133.66 -16%
HydroLogic ARCS System Stage 1 Replacement Cartridge - Stage 1 - Sediment Filter
In Stock: 11
$109.55 $130.47 -16%
HydroLogic PreEvolution KDF Catalytic Carbon Filter
In Stock: 49
$102.98 $129.35 -20%
Alchemist™ H2O2 Liquid Oxygen - 5gal (OR)
Out of stock
$97.09 $135.16 -28%
Cutting Edge Solutions pH Down, 1 gal, case of 4
In Stock: 60
$95.08 $135.96 -30%
Cutting Edge Solutions pH Up, 1 gal, case of 4
In Stock: 46
$95.08 $135.96 -30%
HydroLogic BIGboy Green Coconut Carbon Filter - 7 GPM - 5 Micron Filtration
In Stock: 162
$94.61 $112.68 -16%
HydroLogic Evolution-RO 1000 Wall Mount Bracket - Stainless Steel
In Stock: 14
$93.46 $111.32 -16%
HydroLogic PreEvolution ChloraShield Replaceable Carbon Filter Upgrade - 1 GPM - 1 Micron
In Stock: 31
$91.20 $108.60 -16%
Biobizz Bio-PH- PH Regulator 5L pH DOWN
In Stock: 7
$90.00 $126.76 -29%
HydroLogic Evolution-RO 1000 Fitting Kit
In Stock: 7
$84.38 $87.86 -4%
Biobizz Bio-PH+ PH Regulator 5L pH UP
In Stock: 7
$83.57 $117.70 -29%
Polyester Element for Spin-Down Sediment Filters | 2in - 140 Mesh
Out of stock
$82.05
HydroLogic TALLBoy KDF85 Catalytic Carbon Filter Upgrade
In Stock: 33
$75.46 $84.95 -11%
HydroLogic Evolution-RO ChloraShield Replaceable Carbon Filter Upgrade - 1 GPM - 1 Micron
In Stock: 103
$74.09 $83.95 -12%
HydroLogic Evolution-RO 1000 Filter Housing
In Stock: 13
$69.64 $72.50 -4%
HydroLogic BIGboy Sediment Filter - Pleated - Cleanable
In Stock: 191
$69.51 $82.79 -16%
HydroLogic TALLBoy ChloraShield Replaceable Carbon Filter Upgrade - 2 GPM - 1 Micron
In Stock: 25
$52.48 $73.45 -29%
HydroLogic HyperLogic Poly-Spun Sediment Pre-Filter - 20in x 4.5in - 5 Micron - Single Use
In Stock: 75
$50.09 $59.75 -16%
HydroLogic Stealth-RO & smallBoy KDF85 Catalytic Carbon Filter Upgrade - For Stealth-RO & smallBoy Systems
In Stock: 60
$45.28 $50.95 -11%
Netafim Manual Disc Filter | 0.75in
In Stock: 70
$44.35 $55.90 -21%
Netafim Disc Filter 3/4" MPT x MPT 140 Mesh 17 GPM Maximum Flow
In Stock: 10
$43.72 $47.66 -8%
Polyester Element for Spin-Down Sediment Filters | 1.5in - 140 Mesh
Out of stock
$43.55
HydroLogic PreEvolution Sediment Filter - Pleated - Cleanable
In Stock: 45
$43.29 $51.56 -16%
Alchemist™ H2O2 Liquid Oxygen - 1gal (OR)
Out of stock
$42.53
Leader FA5 Clear Filter Housing | 5in - Transparent - 1in Female Thread
In Stock: 224
$39.31
HydroLogic TALLBoy Green Coconut Carbon Filter - 2 GPM - 5 Micron Filtration
In Stock: 38
$38.72 $46.13 -16%
Hydrologic MicRO RO Membrane, 75 GPD
Out of stock
$38.34 $59.95 -36%
HydroLogic Merlin-Garden Pro Green Coconut Carbon Filter - 2 GPM
In Stock: 29
$38.02 $45.21 -16%
HydroLogic Stealth-RO 300 Flush Valve Flow Restrictor | For Stealth-RO 300 Systems
In Stock: 19
$36.89
Alchemist H2O2 Liquid Oxygen 34% Gallon - 1gal
In Stock: 173
$36.80
HydroLogic Evolution-RO Quick Connect Liquid-Filled Pressure Gauge - 1/2in QC Tee
In Stock: 76
$34.73 $41.95 -17%
HydroLogic Stealth-RO Replacement Filter Housing | For Stealth-RO Systems
In Stock: 9
$30.87 $32.14 -4%
General Hydroponics pH Down Liquid - 1gal
In Stock: 5330
$29.32 $41.79 -30%
General Hydroponics pH Up Liquid - 1gal
In Stock: 4130
$29.32 $41.79 -30%
Dramm Inline Filter | ILF-175 - 10gpm - 40psi
In Stock: 65
$28.57 $28.59
Cutting Edge Solutions pH Down | 1gal Bottle
Out of stock
$26.97 $33.99 -21%
Cutting Edge Solutions pH Up | 1gal Bottle
Out of stock
$26.97 $33.99 -21%
AXEON SDF-45-2005 Sediment Filter 4.5" x 20"
Out of stock
$26.31 $31.35 -16%
HydroLogic Stealth-RO and smallBoy ChloraShield Replaceable Carbon Filter Upgrade - 1 GPM - 1 Micron
In Stock: 36
$25.46 $35.65 -29%
AXEON R1 Series Sediment Filter, 5 Micron
In Stock: 49
$25.42 $31.35 -19%
Biobizz Bio-PH- PH Regulator 1L pH DOWN
In Stock: 67
$24.59 $31.50 -22%
Biobizz Bio-PH+ PH Regulator 1L pH UP
In Stock: 49
$22.85 $29.26 -22%
HydroLogic Stealth-RO and smallBoy Green Coconut Carbon Filter - 1 GPM - 10 Micron Filtration
In Stock: 140
$20.47 $24.39 -16%
MICROBE-LIFT Super Dechlorinator Plus | 32oz
In Stock: 84
$17.82 $31.99 -44%
Central Coast Garden pH Up Solution | 1gal - 35% Potassium Hydroxide
In Stock: 17
$17.49 $49.95 -65%
General Hydroponics pH Control Kit - 4pc - 8oz pH UP, 8oz pH DOWN, 1oz Indicator, & Vial
In Stock: 4387
$17.10 $24.34 -30%
HydroLogic TALLBoy Poly-Spun Sediment Filter - 20in x 2.5in - 5 Micron - Single Use
In Stock: 68
$17.05 $20.31 -16%
Show other 22 products
Product filters
Free Shipping
In Stock
Price
$
–
$
  • $2
  • $100951
Shop Owner
Brand
    Show all (20)