ZERO TDS FOR LESS

Reefkeepers demand zero tds. Our Reverse Osmosis RODI systems use only the highest rated components & always include a lifetime warranty

~home of the h2o Guru, since 1982~
SHOP RODI SYSTEMS

Zero TDS RODI Systems

Lab grade. 18.3 mgohm. 0.00 TDS, major reef club sponsor for over 40 years!
TYPHOON 5 STAGE REEFKEEPER RODI
from $159.95
TYPHOON III REEFKEEPER RODI
from $194.95
Sale
TYPHOON III EXTREME 150 GPD REEFKEEPER RODI
$309.95 from $289.95
NEPTUNE 8 STAGE REEFKEEPER RODI with 2 MEMEBRANES & 3 DI's
from $369.95
COMPACT 5 STAGE REEFKEEPER RODI
from $154.95
COMPACT III REEFKEEPER RODI
from $189.95
DUAL HOME REEF
from $219.95
HURRICANE DUAL HOME REEF
from $279.95
CYCLONE 4 STAGE REEFKEEPER RODI
from $149.95
Sale
MIGHTY MITE 50 GPD RODI
$129.95 from $109.95
1000 GPD PUMP DRIVEN COMMERCIAL RO
from $1,599.95

Drinking Water RO Systems

For families, dental offices or any location where ultra pure water is desired. Plug & play!
WATER COP - 5 STAGE RO 50 GPD
from $181.95
ED - EXTRA DUTY REVERSE OSMOSIS UNIT
from $241.95
MINI UNDER-THE-SINK RO SYSTEM
from $149.95
MAX UNDER-THE-SINK RO SYSTEM
from $209.95
Sale
Mighty Mite RO System 50GPD
$119.95 from $99.95
Sale
Restructuring Pod +PH Boost Filter +Magnesium +Calcium
$179.95 $129.95

Filter Packs, Filters & Media

We have specifically designed every filter pack array to ensure you get the highest performance possible out of your water purification system. Sediment, Carbon, DI Resin, KDF & more at affordable prices since 1982!
Typhoon Filter Pack
from $39.95
Extreme TPack
$48.95
4 Pack Filters
from $28.95
Chloramine 4 Pack
$37.95
Sale
Restructuring Pod +PH Boost Filter +Magnesium +Calcium
$179.95 $129.95
Ph Restructuring Pod Refill
$69.95
Max Mini Mighty Mite Filter Pack
$21.95
Mighty Mite Filter Pack with DI
$29.95
Compact Reefkeeper Filter Pack
from $39.95
Cyclone 4 Stage Filter Pack
$30.95
Dual Home Reef Filter & DI Pack
from $47.95
Hurricane Filter Pack
$49.95
Tsunami Pack
from $51.95
Neptune Filter Pack with DI
from $76.95
10" Sediment Filter
from $2.95
Catalytic Carbon Cartridge 10"
$18.95
10" 5 Micron Carbon Block
$9.95
10" 1 Micron Carbon Block
$12.95
InLine Sediment Filters
$7.95
InLine Carbon Filter
$8.95
DI Resin Cartridge 10" Color Changing
$20.95
InLine DI
$19.95
3 Pack Filters
from $21.95
Chloramine Filter Pack
$30.95

Pumps

Booster pumps, Demand / Delivery Pumps, Permeate pumps & many fitting accessories to make your pump purchase in one fell swoop!
Booster Pump Power Station
$139.95
Permeate Pump Kit
from $61.95
Delivery Pump 1.4 GPM
from $129.95
Delivery Pump 4 GPM
from $349.95
Booster Pump Powerstation Transformer 36VDC/110VAC
$28.95
High Pressure Switch for Booster Pump
$19.95
Brass Control Valve
$12.95
40 Mesh Strainer for Aquatec Delivery Pump
$34.95
50 Mesh Strainer for 3/8 " Tubing
$24.95
50 Mesh Strainer for 1/2 " Tubing
$29.95
Aquatec 2A Transformer
$34.95
Aquatec High Pressure Switches
from $24.95
Aquatec 8800 Series Booster Pump
from $149.95

DI Resin / Deionization

Guaranteed Fresh every time. Zero TDS. Shipped in heavy duty mylar bags. Nuclear grade. From the same manufacturers production line serving US nuclear submarines.
DI Resin Cartridge 10" Color Changing
$20.95
InLine DI
$19.95
Cation DI Resin Cartridge 10" Color Changing
$22.95
ANION DI Resin Cartridge 10" Color Changing
$22.95
DI Resin Mixed Bed Color Changing Bulk Media
from $40.95
CATION DI Resin Color Changing Bulk Media
from $45.95
ANION DI Resin Color Changing Bulk Media
from $45.95
DI Resin Refillable Kit
from $47.95
In-Line DI Adder Kit
from $20.95
Vertical Color Changing DI Resin Adder Kit
from $37.95
Twin DI with Dual In-Line TDS Meter
from $99.95
Triple DI with Dual In-Line TDS Meter
from $129.95
10" Refillable Cartridge - Clear
$6.95
Senno TDS Mini Handheld Meter
$19.95
Sale
Senno Dual TDS Meter
$39.95 $29.95
20" Twin DI with Dual In-Line TDS Meter
$199.95
20" DI Cartridge Refillable
$37.95
20" Refillable Cartridge - Clear
$13.95
DI Resin Mixed Bed Color Changing 1.25# Bag
$14.95
DI Resin MB Color Changing (1.125 cubic ft / 45 lbs)
$349.95

Reverse Osmosis Membranes

The worlds highest rated 99%+ rejection rate ( RR ) membranes. RO membranes should be changed every 2-5 years or when ( RR ) is below 90%.
50 GPD Filmtec Membrane
from $37.95
75 GPD Filmtec Membrane
from $39.95
100 GPD Filmtec Membrane
from $41.95
150 GPD Axeon Membrane
from $43.95
Sold Out
Merlin Membranes & Filter Pack
$259.95 $209.95

TDS Meters, Pressure Gauges and More !

Easily upgrade your system to get the results you need.
Senno TDS Mini Handheld Meter
$19.95
Sale
Senno Dual TDS Meter
$39.95 $29.95
Stainless Steel 150 PSI Gauge
$18.95
TDS Monitor / Alarm
$19.95
Flow Monitor ( FLM-3 hm digital )
$45.95
Filter Monitor with Volumizer
$44.95
HM Digital TRM-1: Triple Inline TDS Monitor
$45.95
HM Digital DM-2: Commercial In-Line TDS Meter
$49.95
Sold Out
TM-1 Digital Thermometer
$29.95
HM Digital DM-1 Dual In-Line TDS Meter
$29.95
TDS3 Meter w/ Carrying Case
$21.95
Sale
COM-100 EC / TDS / Temp Meter Combo
$74.95 $64.95
Sale
PH-200 Waterproof PH Meter
$89.95 $59.95
Sale
HM COM 100 & PH 200
$174.95 $119.95
2" 150 PSI Gauge (back mount)
$14.95
2" 150 PSI Gauge (bracket mount)
$24.95
HM Digital DM-3: In-Line TDS Meter
$59.95
FlowMaster Flow Meter by Hydrologic
$37.95

Special Offers

Sale
TYPHOON III EXTREME 150 GPD REEFKEEPER RODI
$309.95 from $289.95
Sale
Senno Dual TDS Meter
$39.95 $29.95
Sale
Restructuring Pod +PH Boost Filter +Magnesium +Calcium
$179.95 $129.95
Sale
PH-200 Waterproof PH Meter
$89.95 $59.95
Sale
Mighty Mite RO System 50GPD
$119.95 from $99.95
Sale
HM COM 100 & PH 200
$174.95 $119.95
Sale
Fish Store Case
$209.75 from $159.95
Sale
Evolution/Merlin Carbon Pre Filter 17" 5 Micron
$29.95 from $16.95
DI Resin Refillable Kit
from $47.95
DI Resin Mixed Bed Color Changing Bulk Media
from $40.95
Sale
COM-100 EC / TDS / Temp Meter Combo
$74.95 $64.95
CATION DI Resin Color Changing Bulk Media
from $45.95
ANION DI Resin Color Changing Bulk Media
from $45.95
20" Twin DI with Dual In-Line TDS Meter
$199.95