0Cart

Water Filtration & Treatment

Pre-Filters
Sort by:
Price: High to Low
Show:
20
General Hydroponics PRO pH Up - 2.5gal
In stock
$103.57 $168.07 -38%
Save 15%
HydroLogic PreEvolution KDF Catalytic Carbon Filter
In stock
$97.18 $114.95 -15%
Alchemist™ H2O2 Liquid Oxygen - 5gal (OR)
Out of stock
$93.67 $135.16 -31%
Save 18%
HydroLogic BIGboy Green Coconut Carbon Filter - 7 GPM - 5 Micron Filtration
In stock
$92.58 $112.68 -18%
Cutting Edge Solutions pH Down, 1 gal, case of 4
In stock
$91.74 $135.96 -33%
Cutting Edge Solutions pH Up, 1 gal, case of 4
In stock
$91.74 $135.96 -33%
Save 18%
HydroLogic Evolution-RO 1000 Wall Mount Bracket - Stainless Steel
In stock
$91.46 $111.32 -18%
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
$89.83 $117.99 -24%
Save 18%
HydroLogic PreEvolution ChloraShield Replaceable Carbon Filter Upgrade - 1 GPM - 1 Micron
In stock
$89.24 $108.60 -18%
Biobizz Bio-PH- PH Regulator 5L pH DOWN
In stock
$86.83 $126.76 -32%
Rusco Spin-Down Filter | 1.5in 140 mesh
Out of stock
$86.38
GrowoniX Replacement High-Flow Membrane | for EX/GX200, GX300, EX/GX400 and EX400-T Systems
Out of stock
$84.52 $111.61 -24%
Biobizz Bio-PH+ PH Regulator 5L pH UP
In stock
$80.62 $117.70 -32%
Save 9%
HydroLogic Evolution-RO 1000 Fitting Kit
In stock
$79.56 $87.86 -9%
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
$73.45 $96.06 -24%
Save 15%
HydroLogic TALLBoy KDF85 Catalytic Carbon Filter Upgrade
In stock
$72.23 $84.95 -15%
Save 16%
HydroLogic Evolution-RO ChloraShield Replaceable Carbon Filter Upgrade - 1 GPM - 1 Micron
In stock
$70.91 $83.95 -16%
Save 18%
HydroLogic BIGboy Sediment Filter - Pleated - Cleanable
In stock
$68.02 $82.79 -18%
Save 9%
HydroLogic Evolution-RO 1000 Filter Housing
In stock
$65.66 $72.50 -9%
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
$63.29 $83.13 -24%
Show another 20 products
Product filters
Free Shipping
In Stock
Price
$
–
$
  • $2
  • $95182
Shop Owner
Brand
    Show all (21)