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Collection: RO Filters & Media

RO and RO/DI water filtration for aquariums — systems, membranes, prefilters, DI resin, and TDS meters for pure water. Without a TDS meter, spent DI resin gives no visible warning.

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51 products

Bulk DI Resin for RO Units by Reef Crest Aquatics - Front

RO Media

Reef Crest Bulk DI Resin (1.2 lb)

Regular price $19.95
Sale price $19.95 Regular price
Aquatic Life RO Buddie With DI - 50 GPD

RO Filter

Aquatic Life RO Buddie With DI - 50 GPD

Regular price $129.95
Sale price $129.95 Regular price
Extruded Carbon Filter for RO (Reverse Osmosis) Filter

RO Media

Extruded Carbon Filter for RO (Reverse Osmosis) Filter

Regular price $11.15
Sale price $11.15 Regular price
100 GPD RO Membrane for  Reverse Osmosis Filters - Overall View

RO Media

100 GPD RO Membrane for RO Filter

Regular price $52.95
Sale price $52.95 Regular price
Aquatic Life Smart Buddie RO Booster Pump

RO Accessory

Aquatic Life Smart Buddie RO Booster Pump

Regular price $229.95
Sale price $229.95 Regular price
AquaticLIfe RO Buddie Pack replacement cartridges for RO Units

RO Media

Aquatic Life RO Buddie Value Pack

Regular price $58.95
Sale price $58.95 Regular price
1 Micron Sediment Filter for Reverse Osmosis Filter

RO Media

1 Micron Sediment Filter for Reverse Osmosis Filter

Regular price $7.25
Sale price $7.25 Regular price
IceCap 4 Stage RODI Water Filter - 100GPD

RO Filter

IceCap 4 Stage RODI Water Filter - 100GPD

Regular price $299.95
Sale price $299.95 Regular price
Reef Crest DI Resin Cartridge for RO/DI Filters

RO Media

Reef Crest DI Resin Cartridge for RO/DI Filters

Regular price $28.55
Sale price $28.55 Regular price
Bulk DI Resin for RO Units by Reef Crest Aquatics - Front

RO Media

Reef Crest Bulk DI Resin (5 lb)

Regular price $93.15
Sale price $93.15 Regular price
RO Inline Ball Valve Fitting (1/4 x 1/4 Quick Connect)

RO Fitting

RO Inline Ball Valve Fitting (1/4 x 1/4 Quick Connect)

Regular price $11.35
Sale price $11.35 Regular price
Aquatic Life Float Valve and Solenoid Kit overview

RO Accessory

Aquatic Life Float Valve & Solenoid Kit

Regular price $32.95
Sale price $32.95 Regular price
1/4 Inch Polyethylene Tubing (Blue)

Aquarium Tubing

1/4 Inch Polyethylene Tubing (Blue)

Regular price $0.39
Sale price $0.39 Regular price
1/4 Inch Bulkhead Union - Quick Connect Fittings

RO Fitting

1/4 Inch Bulkhead Union - Quick Connect Fittings

Regular price $5.80
Sale price $5.80 Regular price
Aquatic Life Reverse Osmosis Media

RO Media

Aquatic Life RO Buddie Sediment Cartridge

Regular price $11.80
Sale price $11.80 Regular price
Aquatic Life Reverse Osmosis Media

RO Media

Aquatic Life RO Buddie Carbon Cartridge

Regular price $13.95
Sale price $13.95 Regular price
Ice Cap Industries RO Accessories

RO Accessory

IceCap Dual DI Filter Canister

Regular price $79.95
Sale price $79.95 Regular price
50 GPD TFC Membrane for RO Reverse Osmosis Units - Overall View

RO Media

50 GPD RO Membrane for RO Filter

Regular price $47.95
Sale price $47.95 Regular price
RO Tee Fitting (1/4 x 1/4 x 1/4 Quick Connect)

RO Fitting

RO Tee Fitting (1/4 x 1/4 x 1/4 Quick Connect)

Regular price $5.95
Sale price $5.95 Regular price
RO Y Fitting (1/4 x 1/4 Quick Connect)

RO Fitting

RO Y Fitting (1/4 x 1/4 Quick Connect)

Regular price $5.80
Sale price $5.80 Regular price

Why Filter Your Water First

Municipal tap water is treated for people, not fish — it carries chlorine or chloramine, plus nitrate, phosphate, silicate, and hardness minerals that algae love and delicate species don't tolerate. Filtering it to a clean baseline removes a whole class of problems before they start.

How the Stages Work

  • Sediment prefilter — traps grit and particulates that would clog what follows.
  • Carbon prefilter — strips chlorine and chloramine that would otherwise damage the membrane.
  • RO membrane — the core stage, rejecting the vast majority of dissolved solids.
  • DI resin — a final polish that drives total dissolved solids to zero.
  • Meters and fittings — TDS pens, tubing, valves, and adapters to run and monitor the unit.

Replace prefilters and resin on schedule, and let a TDS meter tell you when — a climbing number means a stage is spent. Whether you mix salt, top off, or fill a planted tank, clean water in makes everything downstream easier. Questions on choosing a system? Email info@jlaquatics.com.

J&L Aquatics was formed in December 1997

Our business was started from our love of the aquarium hobby. We at J&L Aquatics felt that the Canadian aquarist should have the option to purchase top quality supplies, equipment and livestock other than the generally over priced local retail stores.