0Cart

Water Filtration & Treatment

Pre-Filters
Sort by:
Price: High to Low
Show:
20
Cutting Edge Solutions pH Down | 1gal Bottle
Out of stock
$24.38 $33.99 -28%
Cutting Edge Solutions pH Up | 1gal Bottle
Out of stock
$24.38 $33.99 -28%
Dramm Inline Filter | ILF-175 - 10gpm - 40psi
In Stock: 65
$23.88 $26.78 -11%
Biobizz Bio-PH- PH Regulator 1L pH DOWN
In Stock: 68
$21.74 $31.50 -31%
Biobizz Bio-PH+ PH Regulator 1L pH UP
In Stock: 58
$20.19 $29.26 -31%
HydroLogic Stealth-RO and smallBoy Green Coconut Carbon Filter - 1 GPM - 10 Micron Filtration
In Stock: 225
$20.18 $24.39 -17%
MICROBE-LIFT Super Dechlorinator Plus | 32oz
In Stock: 84
$17.32 $31.99 -46%
Central Coast Garden pH Up Solution | 1gal - 35% Potassium Hydroxide
In Stock: 17
$17.00 $49.95 -66%
HydroLogic TALLBoy Poly-Spun Sediment Filter - 20in x 2.5in - 5 Micron - Single Use
In Stock: 69
$16.81 $20.31 -17%
General Hydroponics pH Control Kit - 4pc - 8oz pH UP, 8oz pH DOWN, 1oz Indicator, & Vial
In Stock: 3091
$16.62 $22.75 -27%
Alchemist H2O2 Liquid Oxygen 34% (1 Quart)
In Stock: 1440
$15.80
Central Coast Garden pH Down Solution | 32oz - Concentrate - 75% Phosphoric Acid
Out of stock
$15.21 $19.95 -24%
Central Coast Garden pH Up Solution | 32oz - 35% Potassium Hydroxide
Out of stock
$15.21 $19.95 -24%
Microbe Life Hydroponics pH UP, 1 qt
In Stock: 67
$14.96 $19.99 -25%
Microbe Life Hydroponics pH DOWN, 1 qt
In Stock: 80
$14.96 $19.99 -25%
Leader FA5 Clear Filter Housing | 5in - Transparent - 1in Female Thread
In Stock: 146
$14.49 $38.57 -62%
HydroLogic smallBoy Poly-Spun Sediment Filter - 10in x 2.5in - 5 Micron - Single Use
In Stock: 521
$13.41 $16.24 -17%
General Hydroponics pH Down Liquid - 32oz
In Stock: 4049
$11.44 $15.68 -27%
General Hydroponics pH Up Liquid - 32oz
In Stock: 2577
$11.44 $15.68 -27%
General Hydroponics pH Test Indicator - 8oz
In Stock: 563
$10.61 $14.53 -27%
Show other 12 products
Product filters
Free Shipping
In Stock
Price
$
–
$
  • $2
  • $96624
Shop Owner
Brand
    Show all (20)