Collection: RO Filters & Media

Start With Pure Water

Tap water carries chlorine, chloramine, nitrate, phosphate, and dissolved minerals that feed algae and stress sensitive livestock. A reverse osmosis (RO) or RO/DI filter strips all of that out, giving you a clean baseline for mixing saltwater, topping off, or filling a planted tank. It's the upgrade that quietly solves a lot of water-quality problems. We carry RO gear from IceCap, Aquatic Life, and Reef Crest.

What You'll Find Here

• Complete systems — multi-stage RO and RO/DI units in a range of daily output ratings.
• Membranes — replacement RO membranes rated by gallons per day.
• Prefilters — sediment and carbon cartridges that protect the membrane.
• DI resin — cartridges, refillable shells, and bulk resin to polish water to 0 TDS.
• Tubing, fittings & meters — line, valves, faucet adapters, and TDS meters.

Change prefilters on schedule and watch your TDS meter — a rising reading means it's time to replace resin or a membrane. Pure water in is the cheapest insurance for everything downstream. Email sales@jlaquatics.com to size a unit. J&L has served Canadian aquarists since 1997.