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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

RO Elbow Fitting (1/4 Thread x 1/4 Quick Connect)

RO Fitting

RO Elbow Fitting (1/4 Thread x 1/4 Quick Connect)

Regular price $4.45
Sale price $4.45 Regular price
Aquatic Life Faucet Adapter Kit break-away view

RO Accessory

Aquatic Life Faucet Adapter Kit

Regular price $19.25
Sale price $19.25 Regular price
RO Single Canister Bracket

RO Part

RO Single Canister Bracket

Regular price $8.15
Sale price $8.15 Regular price
Reef Crest R/O Barrel Flow Restrictor (200 GPD)

RO Part

Reef Crest R/O Barrel Flow Restrictor (200 GPD)

Regular price $8.55
Sale price $8.55 Regular price
Reef Crest R/O Barrel Flow Restrictor (100 GPD)

RO Part

Reef Crest R/O Barrel Flow Restrictor (100 GPD)

Regular price $8.55
Sale price $8.55 Regular price
Quick Connect Reducer (1/4 Inch x 3/8)

RO Fitting

Quick Connect Reducer (1/4 Inch x 3/8)

Regular price $11.80
Sale price $11.80 Regular price
Replacement RO Canister

RO Part

Replacement RO Canister

Regular price $31.40
Sale price $31.40 Regular price
Kitchen Sink Faucet Adapter

RO Accessory

Kitchen Sink Faucet Adapter

Regular price $11.95
Sale price $11.95 Regular price
R/O Filter Membrane Housing

RO Part

R/O Filter Membrane Housing

Regular price $26.80
Sale price $26.80 Regular price
Quick Connect Cross Fitting (1/4 Inch)

RO Fitting

Quick Connect Cross Fitting (1/4 Inch)

Regular price $9.55
Sale price $9.55 Regular price
RO Adapter Fitting (1/4 Thread x 1/4 Quick Connect)

RO Fitting

RO Adapter Fitting (1/4 Thread x 1/4 Quick Connect)

Regular price $3.90
Sale price $3.90 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.