0Cart

Water Filtration & Treatment

Pre-Filters
Sort by:
Price: High to Low
Show:
32
Alchemist H2O2 Liquid Oxygen 34% (1 Quart)
In Stock: 1272
$379.20 / $15.80 per unit
(minimum purchase of 24)
General Hydroponics pH Control Kit - 4pc - 8oz pH UP, 8oz pH DOWN, 1oz Indicator, & Vial
In Stock: 3931
$187.80 / $15.65 per unit
(minimum purchase of 12)
Central Coast Garden pH Down Solution | 32oz - Concentrate - 75% Phosphoric Acid
Out of stock
$184.80 / $15.40 per unit
(minimum purchase of 12)
Central Coast Garden pH Up Solution | 32oz - 35% Potassium Hydroxide
Out of stock
$184.80 / $15.40 per unit
(minimum purchase of 12)
Leader CRL5 Mesh Sediment Filter | 5in - 20 Micron
In Stock: 250
$14.49 $15.71 -8%
Hm Digital Handheld Tds-3 Tester
In Stock: 111
$12.86 $22.22 -42%
GrowoniX Spun Sediment Filter | for EX/GX600, EX/GX1000, Lil Boss, and Lil Boss Deluxe - 4.5in x 9.75in - Spun
Out of stock
$12.78 $19.98 -36%
HydroLogic smallBoy Poly-Spun Sediment Filter - 10in x 2.5in - 5 Micron - Single Use
In Stock: 355
$12.64 $16.24 -22%
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 8,000 Gallons of De-...
Out of stock
$12.35 $19.23 -36%
GrowoniX Replacement Ball Valve | 3/8in
Out of stock
$10.86 $12.15 -11%
General Hydroponics pH Down Liquid - 32oz
In Stock: 7257
$10.78 $16.78 -36%
General Hydroponics pH Up Liquid - 32oz
In Stock: 3626
$10.78 $16.78 -36%
HydroLogic Stealth-RO Auto Shut-Off Valve
Out of stock
$10.35
GrowoniX Replacement Ball Valve | 1/4in
Out of stock
$10.20 $11.41 -11%
Cutting Edge Solutions pH Down | 32oz Bottle
In Stock: 80
$10.17 $13.99 -27%
Cutting Edge Solutions pH Up | 32oz Bottle
In Stock: 35
$10.17 $13.99 -27%
Wonder Waterer Grip Handle Filter Case with Strainer | For Use on the Wonder Waterer
Out of stock
$10.16 $10.36 -2%
General Hydroponics pH Test Indicator - 8oz
In Stock: 647
$120.00 / $10.00 per unit
(minimum purchase of 12)
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
$9.76 $15.28 -36%
Emerald Harvest pH Up Quart/0.95 Liter
In Stock: 35
$9.23 $26.68 -65%
Greengro Biologicals Water Conditioner | 8oz - Liquid Concentrate - Removes, Detoxifies & Neutralizes
In Stock: 110
$91.00 / $9.10 per unit
(minimum purchase of 10)
Dramm In-Line Hose Filter | With Element - 80 Mesh
Out of stock
$104.28 / $8.69 per unit
(minimum purchase of 12)
General Hydroponics pH Down Liquid - 8oz
In Stock: 396
$7.72 $11.33 -32%
General Hydroponics pH Up Liquid - 8oz
In Stock: 583
$7.72 $11.33 -32%
General Hydroponics pH Test Kit Indicator - 1oz
In Stock: 1457
$174.96 / $7.29 per unit
(minimum purchase of 24)
GrowoniX Water Line Divider | 2-Way Splitter - 3/8in - White
Out of stock
$6.95
Netafim Disc Filter Cover O-Ring | 3/4in - 120 Mesh
In Stock: 40
$6.19 $12.90 -52%
HydroLogic BIGboy Quick Connect Inlet Fitting | 1/2in NPT x 1/2in QC Inlet
Out of stock
$53.60 / $5.36 per unit
(minimum purchase of 10)
HydroLogic Stealth-RO Double Ended Wrench - For Standard Filter & Membrane Housings
In Stock: 72
$5.30 $7.30 -27%
GrowoniX Micron Spun Sediment Filter | for Slim Scrub Systems - 2.5in x 20in - Micron Spun
Out of stock
$4.84 $7.53 -36%
GrowoniX Water Line Divider | 2-Way Splitter - 1/4in - Black
Out of stock
$4.58 $6.65 -31%
HydroLogic Stealth-RO Quick Connect Membrane Elbows | 1/8in NPT x 1/4in QC - Black
Out of stock
$41.50 / $4.15 per unit
(minimum purchase of 10)
Show other 32 products
Product filters
Free Shipping
In Stock
Price
$
–
$
  • $0
  • $98787
Shop Owner
Brand
Show all (31)