Membrane 50
SKU 740528975090
Out of stock in-store — order now and we'll bring it in for you, ready to ship (or collect) when it arrives. Paid securely at checkout; we'll email you with timing once it's on order.
- Ships Australia-wide — fast dispatch from Eastwood
- Or collect in store with the rest of your order
- Genuine stock — marine specialists since 2012
Overview
The membrane is the heart of any RO or RO/DI system, and its performance quietly degrades over time as it filters out dissolved salts and contaminants. Membrane 50 is a standard-size 50 GPD reverse osmosis membrane, giving your system fresh filtering capacity once the original membrane starts falling behind.
Built to the common 11.75" x 1.75" industry-standard size, it's designed to drop straight into most existing RO and RO/DI housings without modification.
Key features
- 50 gallon-per-day rated thin film composite (TFC) membrane
- High salt rejection rate, typically around 97% under standard test conditions
- Standard 11.75" x 1.75" size, fitting most common RO and RO/DI housings
- Removes a broad range of dissolved solids, heavy metals and organic contaminants
Who it's for
Anyone running an RO or RO/DI system for aquarium top-off or water change water who needs a replacement membrane to restore filtering performance.
Setup & tips
- Flush the new membrane thoroughly before first use, discarding the initial output rather than using it in your tank
- Check your system's housing size before ordering to confirm compatibility
- Track your membrane's output over time — a steady drop in produced water or rising TDS readings signals it's due for replacement
- Replace pre-filters at the same time as the membrane for the best overall system performance



